EQUATE Petrochemical Co.,

WELDING PROCEDURE SPECIFICATION (WPS)

Company Name: EQUATE Petrochemical Co., By: _________________________________________ __

Welding Procedure Specification No. 701 - B Date: 10.04.99 Supporting PQR No.(s) : 013

Revision No:-_____________________ _______ Date:-____________________ ______

Welding Process(es) GTAW Type (s) MANUAL._____ __________ (Automatic, Manual, Machine, or Semi-Auto)

JOINTS (QW-402) DETAILS

Joint Design ____BUTT WELD_(single V)_____________

Backing (yes) __________________(No)______ __________ BEVEL ANGLE 37.5( 2.5 MM

Backing Material (Type) ____________N/A__________________

(Refer to both backing and retainers.) Thick: 3.00 mm

( Metal ( Non-fusing Metal Land:1.5 mm

( Non-metallic ( Other. ROOT GAP 1.6 ( 0.8 MM

Sketches, Production Drawings, Weld Symbols or Written Description

should show the general arrangement of the parts to be welded.

Where applicable, the root spacing and the details of weld groove

may be specified.

(At the option of the Mfgr., sketches may be attached to illustrate joint

design, weld layers and bead sequence, e.g. for notch toughness

procedures, for multiple process procedures, etc.)

( BASE METALS (QW-403)

P. No. __42___________ Group No. _____N/A________ to P. No. _ 8 Group No. _____1____ _______

OR

Specification type and grade _ ASTM SB 165 to specification type and grade __ A312 TP 316 L __

OR

Chem. Analysis and Mech. Prop. _____N/ A______ to Chem. Analysis and Mech. Prop. __ N/ A________________

Thickness Range:

Base Metal : Groove ___( _5.74 mm___________

________________________________________________________________________________ _________________________

( FILLER METALS (QW-404)

Spec. No. (SFA) ___________SFA 5.14___ AWS No. (Class) __E R Ni Cu - 7_______________

F. No. _______________42 _________

A. No. ____________ ________________________

Size of Filler Metal _2.0 mm , 2.4 mm____________

EQUATE Petrochemical Co.,

QW-482 (Back)

WPS NO. _701 - B__ Rev. _________

POSITIONS (QW-405) POSTWELD HEAT TREAT MENT (QW-407)

Position (s) of Groove ___6G_________________________ Temperature Range ___ N/A _

Welding Progression: UP ___X______ Down _______ Time Range ___________N/A_________________

Position (s) of Fillet ____N/A__________________________ _______________________________________________

PREHEAT (QW-406) GAS (QW - 408)

Percent composition

Preheat Temo. Min. _____20 DEG C______________ Gas(es) (Mixture) Flow Rate

Interpass Temp. Max. ____150 DEG. C _____________ _____________________ __________

Preheat Maintenance. ___________________________ Shielding ARGON 99.9% 8-10 L/ MIN

(Continuous or special heating where applicable Trailing

should be recorded) Backing ARGON 99.9% 10-12 L/ MIN _______________________________________________________________________________________ __________________

ELECTRICAL CHARACTERISTICS (QW-409)

Current AC or DC _____DC________ Polarity: _____ELECTRODE - VE __

Amps (Range) ____SEE BELOW TABLE________ Volts (Range) ___SEE BELOW TABLE__________

(Amps and volts range should be recorded for each electrode size, position, and thickness, etc. This information may be listed

in a tabular form similar to that shown below)

Tungsten Electrode Size and Type _______EW - TH (2% THORIATED ) 2.5 MM DIia_ ___

(Pure Tungsten, 2% Thoriated, etc.)

Mode of Metal Transfer for GMAW ______N/A____________________________________________________

(Spray arc, short circuiting arc, etc.)

Electrode Wire feed speed range ____________N/A_______________________________________ ________

TECHNIQUE (QW-410)

String or Weave Bead _____________STRING AND_WEAVE BEAD_____10 mm MAX WEAVE WIDTH_________

Orifice or Gas Cup Size _____________ _______________________________________________________ _

Initial and Interpass Cleaning (Brushing, Grinding, etc.) GRINDING & SS WIRE BRUSHINGSUITABLE FOR SS

Method of Back Gouging _______________ N/A________________________________________ ________ _

Oscillation _____________________________ N/A____________ __________________________ ______

Contact Tube to Work Distance ______________N/A___________________________________ ________________

Multiple or Single Pass (per side) ________________MULTIPLE________________________________ ____ _____

Multiple or Single Electrodes ____________________SINGLE__________________________________ __________

Travel Speed (Range) __________________________SEE BELOW TABLE_________________________________

Peening ______________________________N/A_____________________________________________ __ _______

Other _____________________________________________________________________________________________

Weld

Layer (s)ProcessFiller

ClassMetal

Dia. Curr

Type

Polar. -ent

Amp.

RangeVolt

RangeTravel Speed

Range.Others (e.g. Remarks, Comments, Hot wire Addition, Technique

Torch Angle, Etc.)

ROOT

HOT PASS

FILLING & CAPPING

GTAW

GTAW

GTAWER Ni Cu - 7

DO

DO2.0/2.5 mm

2.0/2.5 mm

2.5 mm

DCEN

DCEN

DCEN60- 100 AMP.

80 - 130 AMP.

80 -130 AMP.12-15 V

12 -15 V

12 -15V45 -55 MM/ MIN

DO

DO