Annexure-I · 4.3.31 Machine should be having Reverse Polarity Ignition Facility. 4.3.32 Machine should be having Special Modes for welding of Aluminum. 4.3.33 The maximum noise value

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Annexure-I

Request for Proposal (RFP)

For Procurement of AC/DC TIG Welding Machine

Space Applications Centre (SAC)

Indian Space Research Organisation (ISRO)

Ahmedabad- 380015

India

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This document contains proprietary information of SAC/ISRO, Ahmedabad. Unauthorized

copy or reproduction of this document in whole or in part without the prior written consent

of SAC/ISRO is strictly forbidden.

SAC/ISRO reserves the right to alter this information at any time without notice.

Abbreviations/Definitions:

RFP - Request for Proposal

SAC - Space Applications Centre

ISRO - Indian Space Research Organization

Purchaser - Space Applications Centre

Bidder - The Firm which is participating in Bid

Vendor - The Firm on whom order is placed

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Contents

1 General Background 5

2 Scope of Supply 5

3 Overall unit Requirement 5

4 Technical specifications of machine 6

4.1 Type of Machine 6

4.2 Construction 6

4.3 Salient Features of Machine 6

4.4 Major Components of the machine 9

4.5 Capabilities 9

4.6 Base materials for welding 9

4.7 Process selection 10

4.8 Power Source of Machine 10

4.9 Main Control Panel Setting 11

4.10 Mode Selection 12

4.11 Welding Parameters 12

4.12 Background Setting 13

4.13 Gas functions with AC/DC TIG 14

4.14 Cooling Unit 15

4.15 TIG Torch 15

4.16 Wire Feeder Unit 18

4.17 Documentation 18

4.18 Safety 18

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4.19 Language 18

4.20 Main Component of machine 19

4.21

4.22

4.23

Mandatory accessories to be supplied along

with main unit of TIG welding machine

Wear and Tear parts and any other utilities-

Optional

Optional Accessories/attachments/wear

parts/spares/consumable requirement

19

20

20

5

6

List of Deliverables

Machine Acceptance Test

23

24

7 General Instructions 24

8 Terms and Conditions 25

9 Bidder Qualification Criteria 29

10

11

Warranty

Price Bid format

30

30

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1.0 General background

Space Applications Centre (SAC/ISRO) is currently engaged in the development of optical,

remote sensing, & communicational payloads for different satellite projects. TIG Welding is

one of the prominent methods for joining various component of satellite payloads & thus

obtaining vacuum compatible Leak proof joints at different sub assembly and assembly

levels.

Space Applications Centre (SAC), ISRO intends to procure, AC/DC TIG Welding machine which

should fulfill all requirements and specifications given in this RFP document.

2.0 Scope of supply

Bidder shall submit the proposal for the supply of a Brand New and Non-refurbished AC/DC

TIG Welding machine to purchaser / SAC to meet the requirements / specifications given in

this document. The proposal should include all components mentioned in the list of

deliverables.

The selected bidder has to supply all components of the AC/ DC TIG Welding machine

mentioned in this RFP, install and commission the machine, demonstrate the performance,

accuracy requirements and provide training, with warranty as per the P.O. terms and

conditions.

Bidder has also to supply necessary operating manual, training manual (if any), maintenance

manual etc. as mentioned in this RFP document.

3.0 Overall unit requirement

The unit should comprise the following components: -

Description Quantity

AC/ DC TIG Welding machine

[Confirming to Notes (#)] 01 Unit

Accessories/ Attachment / Wear Parts/ Spares / Consumable

Requirement As per para 4.12

Notes (#)

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Technical Specifications ; General Instructions ; Terms and Conditions ; Machine Acceptance

Test ; Bidder Qualification Criteria ; Warranty ; as mentioned in RFP

Format of Compliance Statement to be submitted with quotation is as per Annexure – II

4.0 Technical Specifications of Machine

4.1 Type of Machine:

AC/ DC TIG Welding machine

4.2 Construction

The machine should be mounted on platform with wheels so that its location can be easily

changed as per the requirement. The platform should accommodate Welding unit, Wire

feeder unit & Cooling unit.

4.3 Salient Features of the machine

4.3.1

Machine should be having a Wire feeder unit. The wire feeder should have

unidirectional and bidirectional motor and provision for feeding wire in forward

as well as reverse direction.

4.3.2 Wire feeder should be separate from Main Welding Power Source.

4.3.3 Machine should be able to perform TIG cold-wire welding in conjunction with

cold wire feeder.

4.3.4 Machine should be Incremental wire type with a minimum feed of 0.4 m/min or

less.

4.3.5

Machine should be capable of Copying and Saving the programs for values of

parameters used for particular types of jobs and can be easily reproducible on

requirement.

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4.3.6 Machine should be able to control Current from Manual Welding Torch.

4.3.7 Machine Should be having Digital Inverter Technology based on MOSFET/IGBT.

4.3.8 Machine should be able to Digitally control and regulate the Welding Process

using digital signal processor.

4.3.9 Machine should be having Generator Compatibility.

4.3.10 Machine should be having Thermostat controlled Fan / Over-temperature

protection.

4.3.11 Machine should be having Earth Leakage monitoring facility.

4.3.12 Machine should be Remote Controllable.

4.3.13 Machine should be having Automatic Gas Post Flow (depending on welding

current).

4.3.14 Machine should be having Switchover Facility between Touch Down and high

frequency ignition.

4.3.15 Machine should be having special program for Tack welding with / without filler

rod and also for Spot welding.

4.3.16 Machine should be having TIG Pulsed Arc facility.

4.3.17 Machine should be having Pulsing Frequency variation of 1.5 KHz or better.

4.3.18 Machine should be having Error Code Display Facility for Easier Fault Diagnosis.

4.3.19 Machine should be Storage memory for storing 90 (or more) welding parameter

programs.

4.3.20 Machine should be having Digital Indication of Mains Voltage monitoring.

4.3.21

Machine should be having Power Source with CE mark & S mark which is

permission of welding in confined spaces in condition of enhanced electrical

hazards.

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4.3.22 Machine should Display the software version.

4.3.23 Machine should be having Unit indicators.

4.3.24 Machine should be having Remote control interface as standard.

4.3.25 Machine should be having Fully digital, Bus-controlled welding system.

4.3.26 The Wire feeder of machine should be Fully digital, with bus-controlled feeding

system.

4.3.27 Machine should be having Wire pulsing and Wire retract Function.

4.3.28 Machine should be capable for manual welding operation with manual welding

Torch.

4.3.29 Machine should be having HOLD indicator.

4.3.30 Machine should be having Automatic Tungsten Electrode Cap Shaping function.

4.3.31 Machine should be having Reverse Polarity Ignition Facility.

4.3.32 Machine should be having Special Modes for welding of Aluminum.

4.3.33 The maximum noise value of machine (Noise Modulation through waveform

adjustment present) for operation at 300 Amp should be 80dbA.

4.3.34 Machine should be having AC wave balancing as an inbuilt feature.

4.3.35 Machine should be Compatible for being coupled with any Robot and TIG wire

Feeder.

4.3.36 Machine should be having Single dial adjustment operation with all other

features and touch buttons on front panel.

4.3.37 Machine should be having cooling unit.

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4.3.38

Machine should be having capability of Harmonizing of 2 arcs in Sync mode

function during 2 sided welding thus able to make simultaneous welding from

both sides easily possible.

4.3.39 Machine should be having Option for Key lock switch to lock the parameters.

4.3.40 Machine should be compatible for TIG welding of Titanium, Aluminum and its

alloys, Nonferrous metals and Low & high alloy steels.

4.3.41 Machine should be having Factory - for resetting the welding machine

4.4 Major Components of Machine

4.5 Capabilities

TIG Welding unit shall be capable to carry out Gas Tungsten Arc Welding (GTAW) process

and Shielded Metal Arc Welding (SMAW) process.

4.6 Base materials for welding

The machine should be capable of welding following base materials.

Sr. No. Material

4.6.1 Aluminum & Aluminum alloys

4.6.2 Cr-Ni Steel

4.6.3 Nickel based alloys

4.4.1 Welding Unit Specifications as per 4.7 to 4.13.

4.4.2 Cooling Unit Specifications as per 4.14

4.4.3 Wire feeder unit Specifications as per 4.16

4.4.4 Welding Torches Specifications as per 4.15

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4.6.4 Magnesium & Magnesium Alloys

4.6.5 Copper & Copper Alloys

4.6.6 Iron- Nickel Alloys (Invar, Kovar)

4.6.7 Steel & Steel Alloys

4.6.8 Copper- Nickel Alloys (Monel)

4.6.9 Soft Iron

4.7 Process selection

Sr. No Process

4.7.1 DC TIG (with reverse & Straight polarity )

4.7.2 AC TIG

4.7.3 AC TIG with Tungsten Ball Cap Shaping

4.7.4 DC SMAW (with reverse & Straight polarity )

4.7.5 AC SMAW

4.8 Power Source of Machine

Sr. No. Features Specifications

4.8.1 Power Source type AC/DC Fully Digitized

MOSFET/IGBT based inverter or

better.

4.8.2 Frequency of Inversion / Switching

frequency

15 KHz or more

4.8.3 Mains Input Frequency 50-60 Hz

4.8.4 Mains Fuse Protection 16 Amps or above

4.8.5 Power Factor 0.95 or higher at 300 Amps.

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4.9 Main Control Panel Setting

4.8.6 Welding Current Range (Stepless) for TIG 5-300 Amps (AC & DC both ) or

better

4.8.7 Welding Current Range (Stepless) for

SMAW

10-300 Amps. (AC & DC both ) or

better

4.8.8 Open Circuit Voltage (OCV) 85 Volts or better

4.8.9 Working Voltage Between 10 Volts to 25 Volts (or

better) for TIG

Between 20 Volts to 35 Volts for

SMAW

4.8.10 Protection Class IP 23 or better

4.8.11 Type of Cooling for power source AF or better

4.8.12 Insulation Category B or better

The machine should be having following indicators:

4.9.1 Actual value of Ampere and Voltage during welding

4.9.2 Operator can be able to set values of following: -

Start Current

Upslope (Continuous increase of starting current up to main

current)

Main Current

Reduced or Hold Current

Down Slope (Continuous decrease of main current up to end

current)

End Current

AC Balance (in case of TIG AC)

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4.10 Mode Selection

Sr. No. Mode

4.10.1 Tack TIG

4.10.2 SMAW

4.10.3 Job Mode - For retrieving stored welding parameters

4.11 Welding Parameters

4.11.1 SMAW

4.11.1.1 Main Current 10-300 Amps. or better

4.11.2 AC TIG

4.11.2.1 Start Current 1-100 % of main current or better

4.11.2.2 Up Slope 0.0-9.0 Seconds or better


4.11.2.4 Hold Current 1-100 % or better

Electrode Diameter

Job Number

4.9.3 Pulsing Activated Indicator

4.9.4 Spot Welding Activated Indicator

4.9.5 Tacking Activated Indicator

4.9.6 Key lock Activated Indicator

4.9.7 Wire feeder Indicator

4.9.8 HF Ignition Indicator

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4.11.2.5 Down Slope 0.0-9.0 seconds or better

4.11.2.6 End Current 1-100 % or better

4.11.2.7 Memory location for Job 90 or more

4.11.3 DC TIG

4.11.3.1 Start Current 1-100 % of main current or better

4.11.3.2 Up Slope 0.0-9.0 Seconds or better


4.11.3.4 Hold Current 1-100 % or better

4.11.3.5 Down Slope 0.0-9.0 seconds or better

4.11.3.6 End Current 1-100 % or better

4.11.3.7 Memory location for Job 90 or more

4.12 Background Setting

4.12.1 SMAW

4.12.1.1 Hot Start Current 1-100% or better

4.12.1.2 Hot Start Time 0.0-1.0 Seconds or better

4.12.1.3 Dynamic Arc force correction Yes

4.12.1.4 Anti-Stick Function ON/OFF

4.12.2 TIG

4.12.2.1 Spot Welding Time / Tacking

function time

Off, 0.1-9.0 Seconds or better

4.12.2.2 Pulsing frequency Off, 0.2 Hz to 1.50 KHz or better

4.12.2.3 Pulse Duty Cycle / Balance: The

ratio of pulse duration to

10% to 90% or better

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background current duration

when pulsing frequency has

been set.

4.12.2.4 Background Current 0-100% or better

4.12.2.5 Start Current Time Off, 0.1 – 5.0 seconds or better

4.12.2.6 End Current Time Off, 0.1 – 5.0 seconds or better

4.12.2.7 Cooling Unit Control Off, On, Automatic

4.12.2.8 High Frequency Time Off, 0.1-5.0 seconds or better

4.12.2.9 Ignition Time Out (Safety cut-out

following an abortive ignition)

Off, 0.1-5.0 seconds or better

4.12.2.10 Arc Break Watchdog (Safety cut-

out following an arc break)

Off, 0.1-5.0 seconds or better

4.12.2.11 AC Frequency 50 to 200 Hz (In AC TIG process) or

better

4.12.2.12 Positive Curve Type Rectangular Sinusoidal, Triangular (In

AC TIG process)

4.12.2.13 Negative Curve Type Rectangular Sinusoidal, Triangular (In

AC TIG process)

4.12.2.14 Reverse Polarity Ignition ON / OFF (In DC TIG Process)

4.13 Gas Functions with AC/DC TIG

4.13.1 Gas Pre Flow 0.0 to 9.0 seconds or better

4.13.2 Gas Post Flow Lower Range

(Gas post flow time at

minimum welding current)

0.0 to 20 seconds or better

4.13.3 Gas Post flow Higher Range

(Gas post flow time at

maximum welding current)

0.0 to 20 seconds or better

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4.13.4 Gas Purger setting Off / On

4.14.1 Mains Voltage (50-60Hz) 400V +/- 15%

4.14.2 Cooling Capacity Q=1 litre/min +40ºC 450 W or more

4.14.3 Delivery rate 3.5 litres/min or better

4.14.4 Rise 20m or better

4.14.5 Coolant Tank Capacity 3.5 litres or more

4.14.6 Degree of Protection IP 23 or better

4.14.7 With flow monitoring facility Yes

4.14.8 With first fill of coolant Yes

4.14.9 Frost protection Upto -100C or better

4.14.10 Maximum pump pressure 5 bar

4.14.11 Maximum coolant pressure 6 bar

4.14 Cooling Unit

4.15 TIG Torch

4.15.1 Gas Cooled TIG Welding Torch

Welding Current (DC) at 35 % Duty cycle 150A – 160A

Electrode Diameter range 1.0-3.2 mm or better

Weight Less than 2.0 Kg

Length 3 meter or more

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Integral remote control unit Yes

Digital parameter display Preferable

“Cap formation activated” display Yes

Thermal Overload protection Yes

Freely Selectable remote parameter Yes

Anti-stick function setting On / Off

4.15.2 Water Cooled TIG Welding Torch

Welding Current at 100% Duty cycle 230A – 240A





Digital parameter display Yes






Welding Current at 100 % Duty cycle 300A – 310A


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Digital parameter display Yes





4.16 Wire Feeder Unit

4.16.1 Wire feeder type Incremental type

4.16.2 Feed rate of wire 0.4 m/min or better

4.16.3 Motor type Both unidirectional and

bidirectional

4.16.4 Motion of wire Both forward and reverse

motion of wire should be

possible.

4.16.5 Minimum Wire feed speed 0.1 m/min or better

4.16.6 Maximum wire feed speed 11 m/min or better

4.16.7 Maximum shielding gas pressure 7 bar or less

4.16.8 Maximum Wire spool Diameter 400 mm or less

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4.17 Documentation

Two sets each of Machine Manual, Programming Instructions, Electronics/Electrical /

Pneumatic Circuit Diagrams, Maintenance Manual, etc. should be supplied with machine in

English language. Minimum two sets of hard copy of manual should be supplied.

4.18 Safety

4.18.1 Machine should have emergency stop circuit with emergency stop button.

4.18.2 Full Protection against Electrical Shock.

4.18.3 Compliance to Safety Regulation – CE / EMV OR Equivalent

4.19 Language

All the documents and control panel displays to be in English language.

4.20 Main Components of Machine

4.20.1 Welding Unit (Specifications as per 4.7 to

4.13)

01 No.

4.20.2 Cooling Unit (Specifications as per 4.14)

01 No.

4.20.3 Wire feeder unit (Specifications as per 4.16)

01 No.

4.20.4 Welding Torches (Specifications as per 4.15)

01 Set

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4.21 Mandatory accessories to be supplied along with Main Unit of TIG

Welding machine

4.21.1 Earth Cable with Earth Clamp 01 No.

4.21.2 Welding cable with electrode holder 01 No.

4.21.3 Argon gas regulator with flow meter and suitable

gas flow tube & end connections

01 Set

4.21.4 A set of suitable spanners and fixing tools 01 Set

4.21.5 Robust and suitable trolley for above TIG welding

unit

01 No.

4.21.6 Leather hose, end connection and wearing parts

case for TIG welding torch

01 No.

4.21.7 Hard copy and soft copies of installation,

maintenance and operation manuals per point no.

4.18.

02 No.

4.21.8 Welding Torch (Specifications as per 4.15.1) 01 No.



4.22 Wear & Tear Parts and any other utilities- Optional

If required the bidder should quote and supply wear & tear parts , consumables and any

other utilities (if required).

4.22.1 Isolation Transformer to keep machine safe in case

of power fluctuations (if required)

01 No.

4.22.2

Voltage Stabilizer to keep machine safe in case of

power fluctuations (if required)

01 No.

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4.22.3 Wear & Tear Parts and Consumables for two years

for smooth functioning of the machine. (Bidder

should attach the list of the items with price of

each item along with the offer).

Quantity of each part will

be recommended and

quoted by the vendor.

4.22.4 Any other utilities or items, which Bidder may

consider necessary for smooth and efficient

functioning of the machine should be quoted

separately.

Quantity of each part will

be recommended and

quoted by the vendor.

4.23 Optional Accessories / Attachment / Wear Parts / Spares /

Consumables Requirement

Sr. No. Optional Accessories Qty.

4.23.1 Extended warranty for period of 1 Year after

completion of initial warranty of 12 months.

01 No.

4.23.2 Extended warranty for period of 2 Years after


01 No.



01 No.

4.23.4 Auto Darkening welding helmets 02 Nos.

4.23.5 Hand Gloves TIG High End 02 Nos.

4.23.6 Welding Jacket & Trousers 02 Sets

4.23.7 TIG Grinder for Tungsten Electrodes 01 Nos.

4.23.8 Pure Tungsten Electrodes

4.23.8.1 Dia. 1.6 mm 50 Nos.

4.23.8.2 Dia. 2.5 mm 50 Nos.

4.23.8.3 Dia. 3.15 mm 50 Nos.

4.23.9 Zirconated Tungsten Electrodes

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4.23.9.1 Dia. 1.0 mm 50 Nos.

4.23.9.2 Dia. 1.6 mm 50 Nos.

4.23.9.3 Dia. 2.5 mm 100 Nos.

4.23.9.4 Dia. 3.15 mm 100 Nos.

4.23.10 Thoriated Tungsten Electrodes

4.23.10.1 Dia. 1.0 mm 50 Nos.

4.23.10.2 Dia. 1.6 mm 50 Nos.

4.23.10.3 Dia. 2.5 mm 50 Nos.

4.23.10.4 Dia. 3.15 mm 100 Nos.

4.23.11 Gas Lens

4.23.11.1 Dia. 1.0 mm 30 Nos.

4.23.11.2 Dia. 1.6 mm 30 Nos.

4.23.11.3 Dia. 2.5 mm 50 Nos.

4.23.11.4 Dia. 3.15 mm 50 Nos.

4.23.12 Clamping Sleeve

4.23.12.1 Dia. 1.0 mm 30 Nos.

4.23.12.2 Dia. 1.6 mm 30 Nos.

4.23.12.3 Dia. 2.5 mm 50 Nos.

4.23.12.4 Dia. 3.15 mm 50 Nos.

4.23.13 Clamping Nut

4.23.13.1 Dia. 1.0 mm 30 Nos.

4.23.13.2 Dia. 1.6 mm 30 Nos.

4.23.13.3 Dia. 2.5 mm 50 Nos.

4.23.13.4 Dia. 3.15 mm 50 Nos.

4.23.14 Ceramic Nozzles

4.23.14.1 Size 5x22 mm, GR 04 30 Nos.

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4.23.14.2 Size 21x22 mm, GR 05 30 Nos.

4.23.14.3 Size 21x22 mm, GR 06 30 Nos.

4.23.14.4 Size 21x22 mm, GR 07 30 Nos.

4.23.14.5 Size 20.8x33 mm, GR 05 50 Nos.

4.23.14.6 Size 9.5x33 mm, GR 06 50 Nos.

4.23.14.7 Size 0.11x33 mm, GR 07 100 Nos.

4.23.15 Gas cooled TIG welding torch

Welding Current (DC) : 120A – 140A at 35% Duty

cycle or better

Electrode Diameter range : 1.0 mm- 3.2 mm or

better

01 Nos.

4.23.16 Water cooled TIG welding torch

Welding Current (DC) : 300A – 320A at 100% Duty

cycle or better

Electrode Diameter range : 1.0 mm- 4.0 mm or

better

01 Nos.

5.1 Welding Unit (Specifications as per 4.8 to 4.13)

01 No.

5.2 Cooling Unit (Specifications as per 4.14)

01 No.

5.3 Wire feeder unit (Specifications as per 4.16)

01 No.

5.4 Isolation Transformer to keep machine safe in case

of power fluctuations (if required)

01 No.

5.5 Voltage Stabilizer to keep machine safe in case of

power fluctuations (if required)

01 No.

5.0 List of Deliverables

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5.6 Earth Cable with Earth Clamp 01 No.

5.7 Welding cable with electrode holder 01 No.

5.8 Argon gas regulator with flow meter and suitable

gas flow tube & end connections

01 Set

5.9 A set of suitable spanners and fixing tools 01 Set

5.10 Robust and suitable trolley for above TIG welding

unit

01 No.

5.11 Leather hose, end connection and wearing parts

case for TIG welding torch

01 No.

5.12 Hard copy and soft copies of installation,

maintenance and operation manuals per point no.

4.18.

02 Sets

5.14 Welding Torch (Specifications as per 4.15.1) 01 No.



6.0 Machine Acceptance Test

6.1 In view of high accuracy requirement, Bidder will have to demonstrate the accuracy

and specifications of the machine to our engineer at their manufacturing plant before

dispatching the machine. In case, our engineer does not visit the manufacturing

plant, bidder shall conduct relevant accuracy tests in accordance to prevailing

standards and provide detailed test results / charts for SAC’s clearance for the

machines to be delivered, prior to dispatch them to SAC.

6.2 The Bidder will have to demonstrate all the performance / specifications of the

machines during installation & commissioning at SAC, Ahmedabad Bopal Campus,

Necessary equipment required for measurement has to be arranged by Bidder.

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7.0 General Instructions

7.1 Only those Bidders, who are confident of getting export permission to supply the

machine to us, should quote.

7.2 Un-priced commercial bid should be attached with the technical bid.

7.3 All the literature is required be in English Language.

7.4 The Bidder must provide list of customers to whom they have supplied the model offered

in this tender in last five years in renowned organization in the world.

7.5 Bidder should offer detailed technical catalogue of the machine and write up for

highlighting special features, specific applications, attachments etc.

8.0 Terms and Instructions

8.1 Quoted prices of machine should also have consideration, inclusion and provision for

following activities/ components.

8.1.1 Deliverable mentioned under Table no. 5.0 (List of Deliverable)

8.1.2 Pre-dispatch & On-site Demonstration of features & test to be carried out mentioned

in Point no. 6.0 .

8.1.3 Certificates of tests carried out for machine & certificates for major components &

all supported Auxiliaries.

8.1.4 Installation and commissioning of machine.

8.1.5 On site warranty for 12 months for trouble free operations of the machine

8.1.6 Detailed training of sufficient duration for Operation, maintenance and

troubleshooting for the said machine at SAC campus, Ahmedabad.

8.1.8 Delivery period of TIG Welding machine will be 12 weeks (Maximum), with all

auxiliaries including installation, successful commissioning and operationalization of

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machine with full demonstration of all machine features at SAC, Ahmedabad. The

said delivery period will be counted from the receipt of purchase order by vendor

from SAC, Ahmedabad (ARO). Acceptance of This terms should be confirmed in

writing by the vendor in their offer. In case of any concerned for non-acceptance, for

defining T0 time from which delivery period would be counted, the vendor should

clearly mention in their terms of offer with respect to counting above referred

delivery period.

8.2 Separate prices should be Quoted for following Optional items:

8.2.1 Extended warranty for period of 1st Year/ 2nd Year / 3rd Year after completion of

initial warranty of 12 months.

8.2.2 Auto Darkening welding helmet

8.2.3 Hand Gloves TIG High End

8.2.4 Welding Jacket & Trousers

8.2.5 TIG Grinder for Tungsten Electrodes.

8.2.6 Pure, Thoriated & Zirconated Tungsten electrodes (As per para 4.23.8 to 4.23.10)

8.2.7 Gas Lens, Clamping nut, Clamping sleeves & Ceramic nozzles (As per 4.22.11 to

4.22.14).

8.2.8 Welding torches as per 4.15.1- 4.15.3.

8.3 All the charges like GST, taxes, duties, packing, forwarding, freight, octroi; agency

commission and any other charges over and above these, should be mentioned clearly and

to be quoted separately.

8.4 Quoted prices should be net and ex-works.

8.5 Mode of dispatch for the machine with auxiliaries should be mentioned clearly.

8.6 In view of high accuracy requirement, it is mandatory that machine should be assembled

in plant with proper technical facility & working instruments.

8.7 The Bidder should recommend and offer all the accessories and attachments which are

essential for smooth functioning and accurate and reliable performance of the machine.

Make, model and detailed technical specifications along with photocopy of catalogue for

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each and every accessory should be attached in the offer. Offer for each and every item

should be given separately.

8.8 Bidder quotations must contain Item by item Compliance statement on each clause of

the RFP-technical specifications, Terms & Conditions and Instruction to bidder, as per

the format given in Annexure-II enclosed herewith. Bidder should mandatorily fill up

details against each of the requirements of the Compliance statement (Annexure-II) sent

along with this tender document. Silence on any point shall be treated as non-

compliance. Simple compliance without details & supporting documents, lack of

information or information without proper explanation shall also be treated as non-

compliance. Hence, in order to strengthen the merit of their offer, please provide

detailed explanation about how bidder intends to comply with each and every

specification of this tender. This is an essential part of the offer.

8.9 Important note for Bidder:

Compliance report in above referred format i.e. Annexure-II is mandatory to attach by

the bidder along with the offer. The offer without the Compliance report in Annexure-

II will be treated as incomplete & liable for rejection and will not be considered for

further order processing without assigning any reason thereof.

8.10 Maximum delivery period at SAC Stores, Ahmedabad for the machine including

installation, successful commissioning and operationalization of machine with full

demonstration of all machine features at SAC, Ahmedabad Bopal Campus. with all

deliverables mentioned under List of deliverables, table no. 5.0 of RFP, should not more

than 12 Weeks. However, Supplier should give their offer specified with their minimum

delivery period, counted from the date on which order will be received by them & should

be adhere to.

8.11 All the items of the purchase order need to be supplied in single consignment to

avoid part supply / shipment.

8.12 Machine should work on Three-phase AC power supply of 400 V + 15%, If machine

offered does not work on 400 V + 15% , bidder shall supply required step up/ step down

transformer for smooth functioning of machine as a specific requirement and price of

the same should be included in basic machine price.

SAC / APUR / 2018007359

Page 27 of 70

8.13 The Bidder, if necessary, should recommend and detail out in their offer, any specific

requirement like compressed air requirement, cutting fluid etc. for the specific

performance of the machine.

8.14 The bidder should recommend any specified requirement like; controlled

environment condition (Temperature, Humidity, Class of cleanliness etc.), Special pit

type earthing (if any), Requirement for machine foundation (if any) at Site and any other

auxiliary necessary to run machine efficiently.

8.15 Supplier should provide weight of the machine, size & dimensions (Foot-print area)

and line diagram regarding surrounding installation location of supporting auxiliaries.

Supplier should also give information regarding provision of lifting/ holding/ movement

of the machine for safe entry into the room/ building during installation activity.

8.16 It will be the sole responsibility of Bidder to carry out electrical connections from

main switch to machine. Necessary cables and tools should be brought by Bidder.

8.17 All necessary tools should be brought by supplier during installation & commissioning

of machine.

8.18 It will be the responsibility of the supplier to deliver the machine safely along with all

auxiliaries to the SAC, Ahmedabad, Bopal Campus. Supplier should ensure safe handling

of the machine till installation, commissioning and performance demonstration of the

machine, is completed at its identified location at SAC, Ahmedabad, Bopal Campus.

However, unloading the machine from supplier’s transport vehicle at specified building

of SAC campus and lifting and shifting the machine inside the identified room/ building

using forklift truck or any other suitable material handling equipment will be done by

SAC-Stores in presence & under the guidelines of the technical staff/ representatives of

supplier.

8.19 Bidder must furnish a letter clearly stating permission from manufacturer to use

original machine parameters, PLC programs, machine controls parameter backup or any

other original data or electronic / logical information which might have needed during

the course of working of the machine and at the time of machine maintenance / repair

SAC / APUR / 2018007359

Page 28 of 70

work in future, enable to avoid bottle necks & delays while the said machine is under

maintenance. In addition to above bidder must also furnish a letter of acceptance from

manufacturer, stating the willingness and readiness to provide any other support /

information within short time, which may require during course of operation of the said

machine.

8.20 Bidder will also confirm / commit in their offer for the following.

Two sets of manual depicting operation, control, electrical circuit diagram,

Mechanical assembly diagram, maintenance and troubleshooting should be

provided by the Bidder in English language, out of which one set of the manual

need to be sent by Airmail / speed mail, quite in advance for our study and

readiness for installation and commissioning. Manual should have information

like; operation, control and maintenance details and requirements of space,

power, foundation details etc. for the installation and commissioning of the

machine. Minimum Two set of manual should be given in hard copy.

The Bidder should provide service for installation, commissioning and detailed

training for operation, maintenance, trouble-shooting etc. free of cost at our

premises. Period of the said training should be mentioned by the bidder in their

offer. However, in any case the said period should not be less than two days.

Electric circuit diagram of the machine should be supplied with the machine in

English language.

Drawings of the important mechanical assemblies should be supplied for the

maintenance purpose.

8.21 Prices of Optional items will not be considered while deciding lowest offer. It is

mandatory for the bidder to quote for all items other than optional items.

9.0 Bidder Qualification criteria

9.1 Bidder should have office in India for after sales support and service and at-least two

factory trained service engineer based in India to carry out maintenance of the

machine offered. Bidder should furnish the address and telephone numbers of the

office and name, address, telephone numbers & email id of the service engineers

who might be required to visit for carrying out the service/ maintenance in future.

SAC / APUR / 2018007359

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Bidder shall also provide full details of their service stations in India including man-

power, infrastructure, equipment’s available at each station along with their offer.

9.2 Manufacturer should have supplied at least 10 such machines to renowned

organizations in the world. Bidder should attach list of the customer with complete

postal address and telephone numbers, to whom they have supplied the machine.

Bidder shall also indicate machines, which have been installed and made operational

in last five years.

9.3 Manufacturer should give undertaking / commitment in writing for efficient after

sales service and supply of spare parts for 10 years from the date of Installation of

machine. Undertaking / commitment in writing should also reveal that Manufacturer

is ready to undergo the agreement with SAC, in future for Need Base Annual

Maintenance Contract (AMC) along with spares, once initial / extended warranty (If

any) will be completed.

9.4 In case bidder is not Original Equipment Manufacturer (OEM), a certificate of

authorization on manufacturer’s letter head is to be furnished, clearly stating that

the bidder is sole selling agent / dealer and authorized for carry out all the sales and

after sales-service activities on the behalf of manufacturer. in India. Validity period

should also be clearly mentioned in the certificate.

10.0 Warranty

10.1 Minimum One-year on-site warranty for trouble free operation of the machine from

the date of final commissioning and acceptance of machine by SAC, Ahmedabad

Bopal Campus and free services shall be provided for any trouble during this period.

During the period of warranty, if any part is to be replaced, Bidder will have to replace

it free of cost. Warranty should include all the items/Basic machine parts supplied

against purchase order, except items consumable in nature.

10.2 Bidder should also give offer for extended warranty for further 1 year/2 years/3 years

after completion of initial warranty of one year or more on chargeable basis. –

Optional. Separate Prices should be quoted for 1st Year/ 2nd Year/ 3rd Year.

11.0 Price bid format

Following tables (Table for deliverables and Table for extended warranty) are the formats

for the price bid which are duly filled up with prices and to be submitted along with the offer.

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11.1 Table for Deliverables with price

Sr. no. Description/

Name of the item

Make Model Product

code (if

any)

Qty. Unit

Price

Total

Price

Remark

A Deliverables*

11.1.1 Welding Unit

(Specifications as

per 4.8 to 4.13)

11.1.2 Cooling Unit

(Specifications as

per 4.14)

11.1.3 Wire feeder unit

(Specifications as

per 4.16)

11.1.4 Isolation

Transformer to

keep machine safe

in case of power

fluctuations (if

required)

11.1.5 Voltage Stabilizer

to keep machine

safe in case of

power fluctuations

(if required)

11.1.6 Earth Cable with

Earth Clamp

11.1.7 Welding cable with

electrode holder

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11.1.8 Argon gas

regulator with flow

meter and suitable

gas flow tube &

end connections

11.1.9 A set of suitable

spanners and

fixing tools

11.1.10 Robust and

suitable trolley for

above TIG welding

unit

11.1.11 Leather hose, end

connection and

wearing parts case

for TIG welding

torch

11.1.12 Hard copy and soft

copies of

installation,

maintenance and

operation manuals

per point no. 4.18.

11.1.13 Welding Torch

(Specifications as

per 4.15.1)


(Specifications as

per 4.15.2)


(Specifications as

per 4.15.3)

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11.1.16 Welding Unit

(Specifications as

per 4.8 to 4.13)

B Optional Items Make Model Product

code (if

any)

Qty. Unit

Price

Total

Price

Remarks

11.1.17 Extended warranty

for period of 1 Year

after completion

of initial warranty

of 12 months.


for period of 2

Years after

completion of

initial warranty of

12 months.


for period of 3

Years after

completion of

initial warranty of

12 months.

11.1.20 Auto Darkening

welding helmets

11.1.21 Hand Gloves TIG

High End

11.1.22 Welding Jacket &

Trousers

11.1.23 TIG Grinder for

Tungsten

Electrodes


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11.1.24.1 Dia. 1.6 mm

11.1.24.2 Dia. 2.5 mm

11.1.24.3 Dia. 3.15 mm


11.1.25.1 Dia. 1.0 mm

11.1.25.2 Dia. 1.6 mm

11.1.25.3 Dia. 2.5 mm

11.1.25.4 Dia. 3.15 mm


11.1.26.1 Dia. 1.0 mm

11.1.26.2 Dia. 1.6 mm

11.1.26.3 Dia. 2.5 mm

11.1.26.4 Dia. 3.15 mm

11.1.27 Gas Lens

11.1.27.1 Dia. 1.0 mm

11.1.27.2 Dia. 1.6 mm

11.1.27.3 Dia. 2.5 mm

11.1.27.4 Dia. 3.15 mm


11.1.28.1 Dia. 1.0 mm

11.1.28.2 Dia. 1.6 mm

11.1.28.3 Dia. 2.5 mm

11.1.28.4 Dia. 3.15 mm

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11.1.29.1 Dia. 1.0 mm

11.1.29.2 Dia. 1.6 mm

11.1.29.3 Dia. 2.5 mm

11.1.29.4 Dia. 3.15 mm


11.1.30.1 Size 5x22 mm, GR

04

11.1.30.2 Size 21x22 mm, GR

05

11.1.30.3 Size 21x22 mm, GR

06

11.1.30.4 Size 21x22 mm, GR

07

11.1.30.5 Size 20.8x33 mm,

GR 05

11.1.30.6 Size 9.5x33 mm,

GR 06

11.1.30.7 Size 0.11x33 mm,

GR 07

11.1.31

Gas cooled TIG

welding torch

Welding Current

(DC) : 120A – 140A

at 35% Duty cycle

or better

Electrode

Diameter range :

1.0 mm- 3.2 mm or

better

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11.1.32 Water cooled TIG

welding torch

Welding Current

(DC) : 300A – 320A

at 100% Duty cycle

or better

Electrode

Diameter range :

1.0 mm- 4.0 mm or

better

Total Price

11.2 Table for extended warranty for period of 1 year, 2 years & 3

years after completion of initial warranty of 12 Months – Optional

Sr.

no.

Description Unit Price Remark

11.2.1 1 Year extended

warranty

Refer Point no. 10.0 of Terms &

Conditions

11.2.2 2 Years extended

warranty


Conditions

11.2.3 3 Years extended

warranty


Conditions

SAC / APUR / 2018007359

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Annexure – II

Compliance Report Format

Sr. No. Specification Compliance What Bidder

should write

under Compliance

column.

1.0 General Background

2.0 Scope of Supply Write (Yes/No)

3.0 Overall unit requirement Write (Yes/No)

4.0 Technical Specifications

4.1 Type of Machine: AC/DC TIG welding

machine

Write (Yes/No)

4.2 Construction: The machine should be

mounted on platform with wheels so that its

location can be easily changed as per the

requirement. The platform should

accommodate Welding unit, Wire feeder unit

& Cooling unit.

Write (Yes/No)

4.3 Salient Features of the Machine

4.3.1

Machine should be having a Wire feeder unit.

The wire feeder should have unidirectional

and bidirectional motor and provision for

feeding wire in forward as well as reverse

direction

Write (Yes/No)

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4.3.2 Wire feeder should be separate from Main

Welding Power Source.

Write (Yes/No)

4.3.3

Machine should be able to perform TIG cold-

wire welding in conjunction with cold wire

feeder.

Write (Yes/No)

4.3.4 Machine should be Incremental wire type with

a minimum feed of 0.4 m/min or less.

Write (Yes/No)

Write numerical value

4.3.5

Machine should be capable of Copying and

Saving the programs for values of parameters

used for particular types of jobs and can be

easily reproducible on requirement.

Write (Yes/No)

4.3.6 Machine should be able to control Current

from Manual Welding Torch.

Write (Yes/No)

4.3.7 Machine Should be having Digital Inverter

Technology based on MOSFET/IGBT.

Write (Yes/No)

4.3.8

Machine should be able to Digitally control

and regulate the Welding Process using

digital signal processor.

Write (Yes/No)

4.3.9 Machine should be having Generator

Compatibility.

Write (Yes/No)

4.310

Machine should be having Thermostat

controlled Fan / Over-temperature

protection.

Write (Yes/No)

4.3.11 Machine should be having Earth Leakage

monitoring facility.

Write (Yes/No)

4.3.12 Machine should be Remote Controllable Write (Yes/No)

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4.3.13 Machine should be having Automatic Gas Post

Flow (depending on welding current).

Write (Yes/No)

4.3.14

Machine should be having Switchover Facility

between Touch Down and high frequency

ignition.

Write (Yes/No)

4.315

Machine should be having special program

for Tack welding with / without filler rod and

also for Spot welding.

Write (Yes/No)

4.3.16 Machine should be having TIG Pulsed Arc

facility.

Write (Yes/No)

4.3.17 Machine should be having Pulsing Frequency

variation maximum up to 1.5 KHz.

Write (Yes/No)

4.3.18 Machine should be having Error Code Display

Facility for Easier Fault Diagnosis.

Write (Yes/No)


4.3.19

Machine should be Storage memory for

storing 90 (or more) welding parameter

programs.

Write (Yes/No)


4.3.20 Machine should be having Digital Indication

of Mains Voltage monitoring.

Write (Yes/No)

4.3.21

Machine should be having Power Source with

CE mark & S mark which is permission of

welding in confined spaces in condition of

enhanced electrical hazards.

Write (Yes/No)

4.3.22 Machine should Display the software version.

Write (Yes/No)

4.3.23 Machine should be having Unit indicators.

Write (Yes/No)

4.3.24 Machine should be having Remote control

interface as standard.

Write (Yes/No)

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4.3.25 Machine should be having Fully digital, Bus-

controlled welding system.

Write (Yes/No)

4.3.26 The Wire feeder of machine should be Fully

digital, with bus-controlled feeding system.

Write (Yes/No)

4.3.27 Machine should be having Wire pulsing and

Wire retract Function.

Write (Yes/No)

4.3.28

Machine should be capable for manual

welding operation with manual welding

Torch.

Write (Yes/No)

4.3.29 Machine should be having HOLD indicator. Write (Yes/No)

4.3.30 Machine should be having Automatic

Tungsten Electrode Cap Shaping function.

Write (Yes/No)

4.3.31 Machine should be having Reverse Polarity

Ignition Facility.

Write (Yes/No)

4.3.32 Machine should be having Special Modes for

welding of Aluminum.

Write (Yes/No)

4.3.33

The maximum noise value of machine (Noise

Modulation through waveform adjustment

present) for operation at 300 Amp should be

80dbA.

Write (Yes/No)


4.3.34 Machine should be having AC wave balancing

as an inbuilt feature.

Write (Yes/No)

4.3.35 Machine should be Compatible for being

coupled with any Robot and TIG wire Feeder.

Write (Yes/No)

4.3.36

Machine should be having Single dial

adjustment operation with all other features

and touch buttons on front panel.

Write (Yes/No)

SAC / APUR / 2018007359

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4.3.37 Machine should be having Cooling unit

should have flow control facility.

Write (Yes/No)

4.3.38

Machine should be having capability of

Harmonizing of 2 arcs in Sync mode function

during 2 sided welding thus able to make

simultaneous welding from both sides easily

possible.

Write (Yes/No)

4.3.39 Machine should be having Option for Key lock

switch to lock the parameters.

Write (Yes/No)

4.3.40

Machine should be compatible for TIG

welding of Titanium, Aluminum and its alloys,

Nonferrous metals and Low & high alloy

steels.

Write (Yes/No)

4.3.41 Machine should be having Factory - for

resetting the welding machine

Write (Yes/No)

4.4 Major Components of Machine

4.4.1 Welding Unit: Specifications as per 4.7 to 4.13 Write (Yes/No)

4.4.2 Cooling Unit: Specifications as per 4.14 Write (Yes/No)

4.4.3 Wire feeder unit: Specifications as per 4.16 Write (Yes/No)

4.4.4 Welding Torches: Specifications as per 4.15 Write (Yes/No)

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4.5 Capabilities

TIG Welding unit shall be capable to carry out

Gas Tungsten Arc Welding (GTAW) process

and Shielded Metal Arc Welding (SMAW)

process.

Write (Yes/No)

4.6 Base material for Welding: The machine should be capable of welding following base

materials.

4.6.1 Aluminum & Aluminum alloys Write (Yes/No)

4.6.2 Cr-Ni Steel Write (Yes/No)

4.6.3 Nickel based alloys Write (Yes/No)

4.6.4 Magnesium & Magnesium Alloys Write (Yes/No)

4.6.5 Copper & Copper Alloys Write (Yes/No)

4.6.6 Iron- Nickel Alloys (Invar, Kovar) Write (Yes/No)

4.6.7 Steel & Steel Alloys Write (Yes/No)

4.6.8 Copper- Nickel Alloys (Monel) Write (Yes/No)

4.6.9 Soft Iron Write (Yes/No)

4.7 Process Selection

4.7.1 DC TIG (with reverse & Straight polarity ) Write (Yes/No)

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4.7.2 AC TIG Write (Yes/No)

4.7.3 AC TIG with Tungsten Ball Cap Shaping Write (Yes/No)

4.7.4 DC SMAW (with reverse & Straight polarity ) Write (Yes/No)

4.7.5 AC SMAW Write (Yes/No)

4.8 Power Source of Machine

4.8.1 Power Source type: AC/DC Fully Digitized

MOSFET/IGBT based inverter or better

Write (Yes/No)

4.8.2 Frequency of Inversion / Switching Frequency:

15 KHz or more

Write (Yes/No)


4.8.3 Mains Input Frequency: 50-60 Hz Write (Yes/No)


4.8.4 Mains Fuse Protection: 16 Amps or above Write (Yes/No)


4.8.5 Power Factor: 0.95 or higher at 300 Amps Write (Yes/No)


4.8.6 Welding Current Range (Stepless) for TIG : 5-

300 Amps (AC & DC both ) or better

Write (Yes/No)


4.8.7 Welding Current Range (Stepless) for SMAW:

10-300 Amps. (AC & DC both ) or better

Write (Yes/No)


4.8.8 Open Circuit Voltage (OCV): 85 Volts or better Write (Yes/No)


4.8.9 Working Voltage: Between 10 Volts to 25 Volts

(or better) for TIG

Write (Yes/No)


SAC / APUR / 2018007359

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Between 20 Volts to 35 Volts (or better) for

SMAW

4.8.10 Protection Class: IP 23 or better Write (Yes/No)

Write class type

4.8.11 Type of Cooling: AF or better Write (Yes/No)

Write cooling type

4.8.12 Insulation Category: B or better Write (Yes/No)

Write insulation

category

4.9 Main Control Panel Setting: The machine should be having following indicators

4.9.1 Actual value of Ampere and Voltage during

welding

Write (Yes/No)

4.9.2 Operator can be able to set values of

following: -

Start Current

Upslope (Continuous increase of

starting current up to main current)

Main Current

Reduced or Hold Current

Down Slope (Continuous decrease of

main current up to end current)

End Current

AC Balance (in case of TIG AC)

Electrode Diameter

Job Number

Write (Yes/No)

4.9.3 Pulsing Activated Indicator Write (Yes/No)

4.9.4 Spot Welding Activated Indicator Write (Yes/No)

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4.9.5 Tacking Activated Indicator Write (Yes/No)

4.9.6 Key lock Activated Indicator Write (Yes/No)

4.9.7 Wire feeder Indicator Write (Yes/No)

4.9.8 HF Ignition Indicator Write (Yes/No)

4.10 Mode Selection

4.10.1 Tack TIG (AC/DC) Write (Yes/No)

4.10.2 SMAW Write (Yes/No)

4.10.3 Job Mode - For retrieving stored welding

parameters

Write (Yes/No)

4.11 Welding Parameters

4.11.1 SMAW

4.11.1.1 Main Current: 10-300 Amps or better Write (Yes/No)


4.11.2 AC TIG

4.11.2.1 Start Current : 1-100 % of main current or

better

Write (Yes/No)


4.11.2.2 Up Slope : 0.0-9.0 Seconds or better Write (Yes/No)


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4.11.2.3 Main Current: 5-300 Amps. Write (Yes/No)


4.11.2.4 Hold Current: 1-100 % or better Write (Yes/No)


4.11.2.5 Down Slope: 0.0-9.0 seconds or better Write (Yes/No)


4.11.2.6 End Current: 1-100 % or better Write (Yes/No)


4.11.2.8 Memory location for Job: 90 or more Write (Yes/No)


4.11.3 DC TIG

4.11.3.1 Start Current: 1-100 % of main current or

better

Write (Yes/No)


4.11.3.2 Up Slope: 0.0-9.0 Seconds or better Write (Yes/No)


4.11.3.3 Main Current: 5-300 Amps. or better Write (Yes/No)


4.11.3.4 Hold Current: 1-100 % or better Write (Yes/No)


4.11.3.5 Down Slope: 0.0-9.0 seconds or better Write (Yes/No)


4.11.3.6 End Current: 1-100 % or better Write (Yes/No)


4.11.3.7 Memory location for Job: 90 or more Write (Yes/No)


4.12 Background Setting

4.12.1 SMAW

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4.12.1.1 Hot Start Current: 1-100% or better Write (Yes/No)


4.12.1.1 Hot Start Time: 0.0-1.0 Seconds or better Write (Yes/No)


4.12.1.1 Dynamic Arc force correction : Yes Write (Yes/No)

4.12.1.1 Anti-Stick Function: ON/OFF Write (Yes/No)

4.12.2 TIG

4.12.2.1 Spot Welding Time / Tacking function time:

Off, 0.1-9.0 Seconds or better

Write (Yes/No)


4.12.2.2 Pulsing frequency: Off, 0.2 Hz to 1.50 KHz or

better

Write (Yes/No)


4.12.2.3 Pulse Duty Cycle: The ratio of pulse duration

to background current duration when pulsing

frequency has been set: 10% to 90% or better

Write (Yes/No)


4.12.2.4 Background Current: 0-100% or better Write (Yes/No)


4.12.2.5 Start Current Time: Off, 0.1 sec – 5.0 sec or

better

Write (Yes/No)


4.12.2.6 End Current Time: Off, 0.1 sec – 5.0 sec or

better

Write (Yes/No)


4.12.2.7 Cooling Unit Control: Off, On, Automatic Write (Yes/No)

4.12.2.8 High Frequency Time: Off, 0.1-5.0 seconds or

better

Write (Yes/No)


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4.12.2.9 Ignition Time Out: Off, 0.1-5.0 seconds ( Safety

cut-out following an abortive ignition) or

better

Write (Yes/No)


4.12.2.10 Arc Break Watchdog: Off, 0.1-5.0 seconds (

Safety cut-out following an arc break) or

better

Write (Yes/No)


4.12.2.11 AC Frequency: 50 to 200 Hz (In AC TIG process)

or better

Write (Yes/No)


4.12.2.12 Positive Curve Type: Rectangular Sinusoidal,

Triangular (In AC TIG process)

Write (Yes/No)

4.12.2.13 Negative Curve Type: Rectangular Sinusoidal,

Triangular (In AC TIG process)

Write (Yes/No)

4.12.2.14 Reverse Polarity Ignition: ON / OFF (In DC TIG

Process)

Write (Yes/No)

4.13 Gas Functions with AC/DC TIG

4.13.1 Gas Pre Flow : 0.0 to 9.0 seconds or better Write (Yes/No)


4.13.2 Gas Post Flow Lower Range (Gas post flow

time at minimum welding current) : 0.0 to 20

seconds or better

Write (Yes/No)


4.13.3 Gas Post flow Higher Range : 0.0 to 20 seconds

or better

Write (Yes/No)


4.13.4 Gas Purger setting range : Off / On Write (Yes/No)

4.14 Cooling Unit

4.14.1 Mains Voltage (50-60Hz): 400V +/- 15% Write (Yes/No)


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4.14.2 Cooling Capacity Q=1 litre/min +40ºC : 450 W

or more

Write (Yes/No)


4.14.3 Delivery rate : 3.5 litres/min or better Write (Yes/No)


4.14.4 Rise : 20m or better Write (Yes/No)


4.14.5 Coolant Tank Capacity : 3.5 litres or more Write (Yes/No)


4.14.6 Degree of Protection : IP 23 or better Write (Yes/No)

4.14.7 With flow control facility : Yes Write (Yes/No)

4.14.8 With first fill of coolant : Yes Write (Yes/No)

4.14.9 Frost protection : Upto -100C or better Write (Yes/No)


4.14.10 Maximum pump pressure : 5 bar or better Write (Yes/No)


4.14.11 Maximum coolant pressure : 6 bar or better Write (Yes/No)


4.15 TIG Torch

4.15.1 Gas Cooled TIG Welding Torch

Welding Current (DC) at 35 % Duty cycle : 150A

– 160A

Write (Yes/No)


Electrode Diameter range : 1.0-3.2 mm or

better

Write (Yes/No)


Weight : Less than 2.0 Kg Write (Yes/No)

SAC / APUR / 2018007359

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Length : 3 meter or more Write (Yes/No)

Integral remote control unit: Yes Write (Yes/No)

Digital parameter display : Preferable Write (Yes/No)

“Cap formation activated” display : Yes Write (Yes/No)

Thermal Overload protection: Yes Write (Yes/No)

Freely Selectable remote parameter: Yes Write (Yes/No)

Anti-stick function setting: ON/OFF Write (Yes/No)


Welding Current (DC) at 100 % Duty cycle :

230A – 240A

Write (Yes/No)



better

Write (Yes/No)







Digital parameter display : Yes Write (Yes/No)

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Welding Current (DC) at 100 % Duty cycle :

300A – 310A

Write (Yes/No)



better

Write (Yes/No)






Digital parameter display : Yes Write (Yes/No)




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4.16 Wire Feeder Unit

4.16.1 Wire feeder type: Incremental type Write (Yes/No)

4.16.2 Feed rate of wire: 0.4 m/min or better Write (Yes/No)


4.16.3 Motor type : Both unidirectional and

bidirectional

Write (Yes/No)

4.16.4 Motion of wire : Both forward and reverse

motion of wire should be possible.

Write (Yes/No)

4.16.5 Minimum Wire feed speed : 0.1 m/min or less Write (Yes/No)


4.16.6 Maximum wire feed speed : 11 m/min or more Write (Yes/No)


4.16.7 Maximum shielding gas pressure: 7 bar or less Write (Yes/No)


4.16.8 Maximum Wire spool Diameter : 400 mm or

less

Write (Yes/No)


4.17 Documentation: Two sets each of Machine

Manual, Programming Instructions,

Electronics/Electrical / Pneumatic Circuit

Diagrams, Maintenance Manual, etc. should

be supplied with machine in English language.

Minimum two sets of hard copy of manual

should be supplied.

Write (Yes/No)

4.18 Safety

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4.18.1 Machine should have emergency stop circuit

with emergency stop button.

Write (Yes/No)

4.18.2 Full Protection against Electrical Shock. Write (Yes/No)

4.18.3 Compliance to Safety Regulation – CE / EMV

OR Equivalent

Write (Yes/No)

4.19 Language :All the documents and control

panel displays to be in English language

Write (Yes/No)

4.20 Main Components of Machine

4.20.1 Welding Unit (Specifications as per 4.7 to

4.13): 1 No.

Write (Yes/No)

4.20.2 Cooling Unit (Specifications as per 4.14) : 1

No.

Write (Yes/No)

4.20.3 Wire feeder unit (Specifications as per 4.16) :

1 No.

Write (Yes/No)

4.20.4 Welding Torches (Specifications as per 4.15) :

1 set

Write (Yes/No)

4.21 Mandatory accessories to be supplied along with Main Unit of TIG Welding

machine

4.21.1 Earth Cable with Earth Clamp : 01 No. Write (Yes/No)

4.21.2 Welding cable with electrode holder: 01 No. Write (Yes/No)

4.21.3 Argon gas regulator with flow meter and

suitable gas flow tube & end connections

Write (Yes/No)

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4.21.4 A set of suitable spanners and fixing tools: 02

Sets.

Write (Yes/No)

4.21.5 Robust and suitable trolley for above TIG

welding unit: 01 No.

Write (Yes/No)

4.21.6 Leather hose, end connection and wearing

parts case for TIG welding torch: 01 No.

Write (Yes/No)

4.21.7 Hard copy and soft copies of installation,

maintenance and operation manuals per point

no. 4.18. : 02 Nos.

Write (Yes/No)

4.21.8 Welding Torch (Specifications as per 4.15.1) :

01 No.

Write (Yes/No)


01 No.

Write (Yes/No)


01 No.

Write (Yes/No)

4.22 Wear & Tear Parts and any other utilities- Optional

If required the bidder should quote and supply wear & tear parts , consumables and any

other utilities (if required).

4.22.1 Isolation Transformer to keep machine safe in

case of power fluctuations (if required): 01 No.

Write (Yes/No)

4.22.2

Voltage Stabilizer to keep machine safe in case

of power fluctuations (if required) ): 01 No.

Write (Yes/No)

4.22.3 Wear & Tear Parts and Consumables for two

years for smooth functioning of the machine.

(Bidder should attach the list of the items with

price of each item along with the offer) :

Quantity of each part will be recommended

and quoted by the vendor

Write (Yes/No)

SAC / APUR / 2018007359

Page 54 of 70

4.22.4 Any other utilities or items, which Bidder may

consider necessary for smooth and efficient

functioning of the machine should be quoted

separately : Quantity of each part will be

recommended and quoted by the vendor.

Write (Yes/No)

4.23 Optional Accessories / Attachment / Wear Parts / Spares / Consumables

Requirement

4.23.1 Extended warranty for period of 1 Year after


01 Nos

Write (Yes/No)



01 Nos

Write (Yes/No)



01 Nos

Write (Yes/No)

4.23.4 Auto Darkening welding helmets : 02 Nos. Write (Yes/No)

4.23.5 Hand Gloves TIG High End: 02 Nos. Write (Yes/No)

4.23.6 Welding Jacket & Trousers: 02 sets. Write (Yes/No)

4.23.7 TIG Grinder for Tungsten Electrodes: 01 Nos. Write (Yes/No)


4.23.8.1 Dia. 1.6 mm : 50 Nos. Write (Yes/No)

4.23.8.2 Dia. 2.5 mm: 50 Nos. Write (Yes/No)


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4.23.11 Gas Lens




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4.23.14.1 Size 5x22 mm, GR 04 : 30 Nos. Write (Yes/No)



SAC / APUR / 2018007359

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4.23.14.5 Size 20.8x33 mm, GR 05 : 50 Nos. Write (Yes/No)



4.23.15 Gas cooled TIG welding torch

Welding Current (DC): 120A – 140A at 35%

Duty cycle or better

Electrode Diameter range: 1.0 mm- 3.2 mm or

better

: 01 Nos.

Write (Yes/No)

4.23.16 Water cooled TIG welding torch

Welding Current (DC): 300A – 320A at 100%

Duty cycle or better

Electrode Diameter range: 1.0 mm- 4.0 mm or

better

: 01 Nos

Write (Yes/No)

5.0 List of Deliverables

5.1 Welding Unit (Specifications as per 4.8 to 4.13)

: 01 No.

Write (Yes/No)

5.2 Cooling Unit (Specifications as per 4.14 : 01

No.

Write (Yes/No)

SAC / APUR / 2018007359

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5.3 Wire feeder unit (Specifications as per 4.16) :

01 No.

Write (Yes/No)

5.4 Isolation Transformer to keep machine safe in

case of power fluctuations (if required) : 01

No.

Write (Yes/No)

5.5 Voltage Stabilizer to keep machine safe in case

of power fluctuations (if required) : 01 No.

Write (Yes/No)

5.6 Earth Cable with Earth Clamp : 01 No. Write (Yes/No)

5.7 Welding cable with electrode holder: 01 No. Write (Yes/No)

5.8 Argon gas regulator with flow meter and

suitable gas flow tube & end connections: 01

Set

Write (Yes/No)

5.9 A set of suitable spanners and fixing tools: 01

Set

Write (Yes/No)

5.10 Robust and suitable trolley for above TIG

welding unit: 01 No.

Write (Yes/No)

5.11 Leather hose, end connection and wearing

parts case for TIG welding torch: 01 No.

Write (Yes/No)

5.12 Hard copy and soft copies of installation,

maintenance and operation manuals per point

no. 4.18. : 02 Sets.

Write (Yes/No)

5.13 Welding Torch (Specifications as per 4.15.1) :

01 No.

Write (Yes/No)


01 No.

Write (Yes/No)

SAC / APUR / 2018007359

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01 No.

Write (Yes/No)

6.0

Machine Acceptance Test

6.1

In view of high accuracy requirement, Bidder

will have to demonstrate the accuracy and

specifications of the machine to our engineer

at their manufacturing plant before

dispatching the machine. In case, our engineer

does not visit the manufacturing plant, bidder

shall conduct relevant accuracy tests in

accordance to prevailing standards and

provide detailed test results / charts for SAC’s

clearance for the machines to be delivered,

prior to dispatch them to SAC.

Write (Yes/No)

6.2

The Bidder will have to demonstrate all the

performance / specifications of the machines

during installation & commissioning at SAC,

Ahmedabad Bopal Campus, Necessary

equipment required for measurement has to

be arranged by Bidder.

Write (Yes/No)

7.0

General Instructions

7.1

Only those Bidders, who are confident of

getting export permission to supply the

machine to us, should quote.

Write (Yes/No)

SAC / APUR / 2018007359

Page 60 of 70

7.2

Un-priced commercial bid should be attached

with the technical bid

Write (Yes/No)

7.3

All the literature is required be in English

Language

Write (Yes/No)

7.4

The Bidder must provide list of customers to

whom they have supplied the model offered

in this tender in last five years in renowned

organization in the world.

Write (Yes/No)

7.5

Bidder should offer detailed technical

catalogue of the machine and write up for

highlighting special features, specific

applications, attachments etc.

Write (Yes/No)

8.0

Terms & Instructions

8.1

Quoted prices of machine should also have

consideration, inclusion and provision for

following activities/ components.

Write (Yes/No)

8.1.1 Deliverable mentioned under Table no. 5.0

(List of Deliverable)

Write (Yes/No)

8.1.2

Pre-dispatch & On-site Demonstration of

features & test to be carried out mentioned in

Point no. 6.0.

Write (Yes/No)

8.1.3

Certificates of tests carried out for machine &

certificates for major components & All

supported Auxiliaries.

Write (Yes/No)

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8.1.4 Installation and commissioning of machine. Write (Yes/No)

8.1.5 On-site warranty for 12 months for trouble

free operations of the machine

Write (Yes/No)

8.1.6

Detailed training of sufficient duration for

Operation, maintenance and troubleshooting

for the said machine at SAC campus,

Ahmedabad.

Write (Yes/No)

8.1.7

Delivery period of TIG Welding machine will be

12 weeks (Maximum), with all auxiliaries

including installation, successful

commissioning and operationalization of

machine with full demonstration of all

machine features at SAC, Ahmedabad. The

said delivery period will be counted from the

receipt of purchase order by vendor from SAC,

Ahmedabad (ARO). Acceptance of This terms

should be confirmed in writing by the vendor

in their offer. In case of any concerned for

non-acceptance, for defining T0 time from

which delivery period would be counted, the

vendor should clearly mention in their terms

of offer with respect to counting above

referred delivery period.

Write (Yes/No)


8.2

Separate prices should be Quoted for following Optional items

8.2.1

Extended warranty for period of 1st Year/ 2nd

Year / 3rd Year after completion of initial

warranty of 12 months.

Write (Yes/No)

8.2.2 Auto Darkening welding helmet Write (Yes/No)

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8.2.3

Hand Gloves TIG High End

Write (Yes/No)

8.2.4 Welding Jacket Write (Yes/No)

8.2.5 TIG Grinder for Tungsten Electrodes. Write (Yes/No)

8.2.6

Pure, Thoriated & Zirconated Tungsten

electrodes (As per para 4.23.8 to 4.23.10)

Write (Yes/No)

8.2.7

Gas Lens, Clamping nut, Clamping sleeves &

Ceramic nozzles (As per 4.22.11 to 4.22.14).

Write (Yes/No)

8.2.8

Welding torches as per 4.15.1- 4.15.3.

8.3

All the charges like GST, taxes, duties, packing,

forwarding, freight, octroi; agency

commission and any other charges over and

above these, should be mentioned clearly and

to be quoted separately.

Write (Yes/No)

8.4 Quoted prices should be net and ex-works Write (Yes/No)

8.5 Mode of dispatch for the machine with

auxiliaries should be mentioned clearly.

Write (Yes/No)

8.6

In view of high accuracy requirement, it is

mandatory that machine should be assembled

in plant with proper technical facility &

working instruments

Write (Yes/No)

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8.7

The Bidder should recommend and offer all

the accessories and attachments which are

essential for smooth functioning and accurate

and reliable performance of the machine.

Make, model and detailed technical

specifications along with photocopy of

catalogue for each and every accessory should

be attached in the offer. Offer for each and

every item should be given separately.

Write (Yes/No)

8.8

Bidder quotations must contain Item by item

Compliance statement on each clause of the

RFP-technical specifications, Terms &

Conditions and Instruction to bidder, as per

the format given in Annexure-II enclosed

herewith. Bidder should mandatorily fill up

details against each of the requirements of the

Compliance statement (Annexure-II) sent

along with this tender document. Silence on

any point shall be treated as non-compliance.

Simple compliance without details &

supporting documents, lack of information or

information without proper explanation shall

also be treated as non-compliance. Hence, in

order to strengthen the merit of their offer,

please provide detailed explanation about

how bidder intends to comply with each and

every specification of this tender. This is an

essential part of the offer.

Write (Yes/No)

8.9

Important note for Bidder:

Compliance report in above referred format

i.e. Annexure-II is mandatory to attach by the

bidder along with the offer. The offer without

the Compliance report in Annexure-II will be

treated as incomplete & liable for rejection

Write (Yes/No)

SAC / APUR / 2018007359

Page 64 of 70

and will not be considered for further order

processing without assigning any reason

thereof

8.10

Maximum delivery period at SAC Stores,

Ahmedabad for the machine including

installation, successful commissioning and

operationalization of machine with full

demonstration of all machine features at SAC,

Ahmedabad. with all deliverables mentioned

under List of deliverables, table no.6.0 of RFP,

should not more than 12 Weeks. However,

Supplier should give their offer specified with

their minimum delivery period, counted from

the date on which order will be received by

them & should be adhere to.

Write (Yes/No)

8.11

All the items of the purchase order need to be

supplied in single consignment to avoid part

supply / shipment.

Write (Yes/No)

8.12

Machine should work on Three-phase AC

power supply of 400 V + 15%, If machine

offered does not work on 400 V + 15% , bidder

shall supply required step up/ step down

transformer for smooth functioning of

machine as a specific requirement and price of

the same should be included in basic machine

price.

Write (Yes/No)

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8.13

The Bidder, if necessary, should recommend

and detail out in their offer, any specific

requirement like compressed air requirement,

cutting fluid etc. for the specific performance

of the machine.

Write (Yes/No)

8.14

The bidder should recommend any specified

requirement like; controlled environment

condition (Temperature, Humidity, Class of

cleanliness etc.), Special pit type earthing (if

any), Requirement for machine foundation (if

any) at Site and any other auxiliary necessary

to run machine efficiently.

Write (Yes/No)

8.15

Supplier should provide weight of the

machine, size & dimensions (Foot-print area)

and line diagram regarding surrounding

installation location of supporting auxiliaries.

Supplier should also give information

regarding provision of lifting/ holding/

movement of the machine for safe entry into

the room/ building during installation activity.

Write (Yes/No)

8.16

It will be the sole responsibility of Bidder to

carry out electrical connections from main

switch to machine. Necessary cables and tools

should be brought by Bidder.

Write (Yes/No)

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8.17

All necessary tools should be brought by

supplier during installation & commissioning

of machine.

Write (Yes/No)

8.18

It will be the responsibility of the supplier to

deliver the machine safely along with all

auxiliaries to the SAC, Ahmedabad, Bopal

Campus. Supplier should ensure safe handling

of the machine till installation, commissioning

and performance demonstration of the

machine, is completed at its identified

location at SAC, Ahmedabad, Bopal Campus.

However, unloading the machine from

supplier’s transport vehicle at specified

building of SAC campus and lifting and shifting

the machine inside the identified room/

building using forklift truck or any other

suitable material handling equipment will be

done by SAC-Stores in presence & under the

guidelines of the technical staff/

representatives of supplier.

Write (Yes/No)

8.19

Bidder must furnish a letter clearly stating

permission from manufacturer to use original

machine parameters, PLC programs, machine

controls parameter backup or any other

original data or electronic / logical information

which might have needed during the course of

working of the machine and at the time of

Write (Yes/No)

SAC / APUR / 2018007359

Page 67 of 70

machine maintenance / repair work in future,

enable to avoid bottle necks & delays while

the said machine is under maintenance. In

addition to above bidder must also furnish a

letter of acceptance from manufacturer,

stating the willingness and readiness to

provide any other support / information

within short time, which may require during

course of operation of the said machine.

8.20

Bidder will also confirm / commit in their offer

for the following.

Two sets of manual depicting

operation, control, electrical

circuit diagram, Mechanical

assembly diagram, maintenance

and troubleshooting should be

provided by the Bidder in English

language, out of which one set of

the manual need to be sent by

Airmail / speed mail, quite in

advance for our study and

readiness for installation and

commissioning. Manual should

have information like; operation,

control and maintenance details

and requirements of space,

power, foundation details etc. for

the installation and

commissioning of the machine.

Minimum Two set of manual

should be given in hard copy.

The Bidder should provide service

for installation, commissioning

Write (Yes/No)

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Page 68 of 70

and detailed training for

operation, maintenance, trouble-

shooting etc. free of cost at our

premises. Period of the said

training should be mentioned by

the bidder in their offer. However,

in any case the said period should

not be less than two days.

Electric circuit diagram of the

machine should be supplied with

the machine in English language.

Drawings of the important

mechanical assemblies should be

supplied for the maintenance

purpose.

8.21

Prices of Optional items will not be considered

while deciding lowest offer.

Write (Yes/No)

9.0

Bidder Qualification Criteria

9.1

Bidder should have office in India for after

sales support and service and at-least two

factory trained service engineer based in India

to carry out maintenance of the machine

offered. Bidder should furnish the address and

telephone numbers of the office and name,

address, telephone numbers & email id of the

service engineers who might be required to

visit for carrying out the service/ maintenance

in future. Bidder shall also provide full details

of their service stations in India including man-

power, infrastructure, equipment’s available

at each station along with their offer.

Write (Yes/No)

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Page 69 of 70

9.2

Manufacturer should have supplied at least 10

such machines to renowned organizations in

the world. Bidder should attach list of the

customer with complete postal address and

telephone numbers, to whom they have

supplied the machine. Bidder shall also

indicate machines, which have been installed

and made operational in last five years.

Write (Yes/No)

9.3

Manufacturer should give undertaking /

commitment in writing for efficient after sales

service and supply of spare parts for 10 years

from the date of Installation of machine.

Undertaking / commitment in writing should

also reveal that Manufacturer is ready to

undergo the agreement with SAC, in future for

Need Base Annual Maintenance Contract

(AMC) along with spares, once initial /

extended warranty (If any) will be completed.

Write (Yes/No)

9.4

In case bidder is not Original Equipment

Manufacturer (OEM), a certificate of

authorization on manufacturer’s letter head is

to be furnished, clearly stating that the bidder

is sole selling agent / dealer and authorized for

carry out all the sales and after sales-service

activities on the behalf of manufacturer. in

India. Validity period should also be clearly

mentioned in the certificate.

Write (Yes/No)

SAC / APUR / 2018007359

Page 70 of 70

10.0

Warranty

10.1

Minimum One-year on-site warranty for

trouble free operation of the machine from

the date of final commissioning and

acceptance of machine by SAC, Ahmedabad

and free services shall be provided for any

trouble during this period. During the period

of warranty, if any part is to be replaced,

Bidder will have to replace it free of cost.

Warranty should include all the items/Basic

machine parts supplied against purchase

order, except items consumable in nature.

Write (Yes/No)

Write warranty period

10.2

Bidder should also give offer for extended

warranty for further 1 year/2 years/3 years

after completion of initial warranty of one

year or more on chargeable basis. – Optional.

Separate Prices should be quoted for 1st Year/

2nd Year/ 3rd Year.

Write (Yes/No)

11.0

Price Bid Format

11.1 The price of machine with deliverables is

quoted as per table 11.1 of RFP.

Write (Yes/No)

11.2

The price of Extended warranty of 1 year, 2

years & 3 years quoted as per table 11.2 of

RFP.

Write (Yes/No)

Documents

Annexure-I · 4.3.31 Machine should be having Reverse Polarity Ignition Facility. 4.3.32 Machine should be having Special Modes for welding of Aluminum. 4.3.33 The maximum noise value