API 6A Monogram

Quality System Procedure QSP-A5-01 Control of the Application and

Removal of the API Monogram

Revision No. : 0

Effective Date: February 14, 2014

Prepared by: Date:

Reviewed by: Date:

Approved by: Date:

UNCONTROLLED WHEN PRINTED OR TRANSMITTED ELECTRONICALLY

Control of the Application and Removal of the

API Monogram

Doc. Id No. REVISION

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1 Purpose

This procedure outlines the API Monogram marking requirement for the manufacture product of

API Spec 6D, API Spec 6A and API Spec 16A. PTBMI factory API monogram stamper shall

apply the API Monogram as indicated in the specific place as per the product specification after

the product is confirmed by QA/QC Department conforms to API specification requirement.

2 Scope

This procedure is responsive to element Annex A, A.5 Control of the Application and Removal of

the API Monogram, of API Specification Q1 Ninth Edition.

3 Responsibility

a) Plant Manager

� Verify the Marking Checklist filled and checked by the supervisor.

b) QC Personnel

� Audit the Marking Checklist

� Maintain the Marking Checklist

� Make sure all the work or process is conjunction with the API monogram marking

requirement.

c) Supervisor

� Prepare all the necessary tools.

� Make sure all required information is obtained before starting the marking.

� Make sure the marking machine can function properly.

� Make sure the marking work is done correctly and safely.

� Recheck every piece of nameplate and make sure all the information marking on the

nameplate is correct.

� Make sure all the information have been marked on the valve.

� Fill up the Marking Checklist.



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d) API Monogram Stamper/ Technician

� Follow the instruction given in Shop Order.

4 Marking Requirement API Spec 6D

Valves that meet the requirement of ISO 14313 and API Spec 6D shall be marked in accordance

with the requirements of Table 1 (Appendix B) and Table 2 (Appendix C). PTBMI API

Monogram license number (6D-1322) is only being used and marked in conjunction with the API

Monogram.

4.1 Marking Method

a. Body/cover/closure stamping shall be performed using a low-stress die-stamp, rounded

“V” or Dot Face type.

b. Each valve shall be provided with an austenitic stainless steel nameplate securely affixed

and so located that it is easily accessible.

c. The marking on the nameplate shall be visually legible.

4.2 Identification Markings

On valves whose size or shape limits the body markings, they may be omitted in the following

order:

a. manufacturer's name or trademark;

b. material;

c. rating;

d. size

For valves smaller than DN 50 (NPS 2), the nameplate can be attached to the valve with the

stainless steel wire. The nameplate and serial number may be omitted by client agreement.

*NOTE: The purchaser can specify requirements for the marking of valve components.



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If the valve with one seat uni-directional and one seat bi-directional, the directions of both seats

shall be specified on a separate identification plate as illustrated in Appendix A: Figure 1. In

Figure 1, one symbol indicates the bi-directional seat and the other symbol indicates the uni-

directional seat.

4.3 API Monogram Record (API 6D)

Marking checklist for API 6D is being used to monitor the marking conformance as required by

API product specification. This record shall be maintained for a minimum of 10 years.

5 Marking Requirement of API Spec 16A

Adapter and loose connections of API 16A manufactured in accordance with the American

National Standard by PTBMI shall be marked in accordance with the procedure and requirements

of API 16A and Table 3 (Appendix D), Table 4 (Appendix E), Table 5 (Appendix F), Table 6

(Appendix G), Table 7 (Appendix H), Table 8 (Appendix I).

Equipment shall be stamped on the product with the product description code (PDC) or

alphanumeric code, followed by “ISO 13533” or “API 16A” and PTBMI API 16A licence

number (16A-0360).

5.1 Marking Method

a. Low-stress-area marking

Using of sharp “V” stamping for identification on low-stress areas (such as nameplate,

outside diameter of flanges, etc.).

b. High-stress-area marking

Using of dot, vibration or round “V” stamping for identification on high-stress areas.

Sharp “V” stamping is allowed in high-stress area only if subsequent stress-relieving is

performed to the component.



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c. Weld metal overlays

When equipment has weld metal-overlaid ring grooves, the ring gasket type and number

shall be followed by “CRA” to designate a corrosion-resistant alloy or “SST” to designate

an austenitic stainless steel.

Notes:

a. All type 16B and 16BX hub connections shall be marked on the neck of the connection,

12mm (1/2 in) max from the required length of the neck.

b. All flanges shall be marked in accordance with ISO 10423.

c. If the ring groove is overlaid with corrosion-resistant material, the ring groove number

shall be followed with “CRA”.

5.2 Repair and Remanufacture Markings

Location of marking for metallic equipment which is repaired or remanufactured shall be in

accordance with Table 3 (Appendix D).

The following marking shall be added to the parts:

a. “RMFR” for remanufacture or “RPR” for repair.

b. Repairer’s /remanufacturer’s name or mark.

c. Date of repair or remanufacture (month & year).

Note: For repair and/or remanufacturer marking requirement, the “RMFR” for remanufacture or

“RPR” for repair shall be added adjacent to the API Monogram applied.

5.3 API Monogram Record (API 16A)

Marking checklist for API 16A is being used to monitor the marking conformance as required by

API product specification. This record shall be maintained for a minimum of 10 years.



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6 Marking Requirement for API Spec 6A

Other end connectors (OEC) and flange connector shall be marked on the exterior surface as

specified in Table 9 (Appendix J).

6.1 Identification Markings

Marking shall contain the following:

a. ISO 10423,

b. The temperature classification

c. Maximum and minimum operating temperatures

d. Material class

e. Product specification level

f. Performance requirement level

g. Date of manufacture (month and year)

h. Manufacturer’s name or mark.

6.2 Marking Method

a. Using of dot, vibration or round “V” stamping for identification on low-stress areas.

b. Conventional sharp V-stamping is acceptable in low-stress areas, such as OD of the

flange.

c. Sharp V-stamping is not permitted in the high-stress areas.

d. Nameplates are not required if the information is permanently marked on the body or

connector.

e. When equipment has weld metal-overlaid ring grooves, the ring gasket type and number

shall be followed by “CRA” to designate a corrosion-resistant alloy or “SST” to designate

an austenitic stainless steel.



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f. Hardness test marking – if hardness are required for bodies, bonnets or end and outlet

connectors, the actual value of the hardness test shall be stamped on the part adjacent to

the test location.

g. Other end connectors (OEC) – the following shall apply:

i. Other end connectors shall be marked with “OEC” following the size or pressure

rating.

ii. Clamp hub end connectors shall be marked” ISO 13533” following the size and

pressure rating.

iii. Loose connectors such as welding neck connectors, blind connectors, threaded

connector, adapter connectors and spacer connectors shall be marked as specified in

Table 9. Performance-requirement level (PR) marking is not required for loose

connectors.

6.3 Repair and Remanufacture Markings

Location of marking for metallic equipment which is repaired or remanufactured shall be in

accordance with Table 9 (Appendix J).

The following marking shall be added to the parts:

a. “RMFR” for remanufacture or “RPR” for repair.

b. Repairer’s / remanufacturer’s name or mark.

c. Repair / remanufacture level (RL)

d. Date of repair or remanufacture (month & year)

Note:

RL level are representative of the product specifications and if applicable product specification level

(PSL) to which the equipment was originally manufactured.

RL level indicate the level of technical requirements associated with the repair or remanufacture of

equipment and do not represent equipment suitability for specific service or performance requirements.

Note: The API Spec 6A Monogram shall not be applied to any product that has been repaired and

remanufactured, including those products that meet the requirement of Annex J of API Spec 6A.



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6.4 Nameplates

Nameplates, when required, shall be made of a corrosion-resistant material. The API monogram

shall be marked on the nameplate, in addition to the marking requirement as shown in Table 9.

PTBMI API Monogram license number (6A-1474) is only being used and marked in conjunction

with the API Monogram.

6.5 API Monogram Record (API 6A)

Marking checklist for API 6A is being used to monitor the marking conformance as required by

API product specification. Record required by API product specification shall be listed in API

Monogram Record List. This record shall be maintained for a minimum of 5 years.

7 Nonconforming Product

If the product subsequently found to be nonconforming with the API specified requirement, the

API monogram should be removed by grinding off the marking. Record of non-conforming

product shall be maintained and retained. See procedure of QSP 510 – 01 Control of Non-

conforming product.

8 Marking Procedure

a. Workshop manager hand over the Shop Order Form (PRO-5711-01) to the supervisor.

b. Supervisor will prepare all the necessary equipment and ensure all the equipment is in

good shape.

c. Supervisor will check on the serial number and information which will be marked on the

nameplate valve component or loose connector.

d. Supervisor will make sure all the information is correct.

e. API Monogram Stamper will mark the nameplate using nameplate marking machine.



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f. While, body/cover/closure stamping shall be performed using a low-stress die-stamp,

rounded “V” or Dot Face type.

g. Supervisor will check the nameplate to ensure all the information is correct before attach

the nameplate to valve, adapter and loose connector.

h. For valve which has ring grove the ring groove number will be mark on the flange edge.

i. Supervisor will make sure all the necessary information have been marked by using the

Marking Checklist Form 6D (PRO-5711-08) for valve, Marking Checklist Form 6A

(PRO-5711-07) and Marking Checklist Form 16A (PRO-5711-09) for adapter and loose

connector before process to the next stage.

9 Reference

a) Control of Non-conforming Product (QSP-510-01)

10 Appendix

Appendix A Figure 1: Typical identification plate for a valve with one seat uni-directional and

one seat bi-directional

Appendix B Table 1: Valve marking (API 6D)

Appendix C Table 2: Marking Example

Appendix D Table 3: Marking requirements and location (API 16A)

Appendix E Table 4: Product description code

Appendix F Table 5: Equipment type

Appendix G Table 6: ISO equipment size designation

Appendix H Table 7: Rated working pressure

Appendix I Table 8: Temperature ratings (Metallic materials)



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Appendix J Table 9: Marking requirement and locations

Appendix K Figure 2: Sample of applicable API specification for the Monogrammed product



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Appendix A

Figure 1: Typical identification plate for a valve with one seat uni-directional and one seat bi-

directional

Appendix B

Table 1: Valve marking (API 6D)

Table 1 – Valve marking (API 6D)

No. Marking Location

1 Manufacturer’s name or trademark Both body and nameplate

2 Pressure class Both body and nameplate

3 Pressure/temperature rating:

a) Maximum operating pressure at maximum operating

temperature

b) Maximum operating pressure at minimum operating

temperature

Nameplate

4 Face-to-face/end-to-end dimensions Nameplate

5 Body material designationa:

Material symbol, e.g. AISI, ASME, ASTM or ISO

Both body and nameplate:

melt identification (e.g

cast or heat number) on

body only

6 Bonnet/cover material designation:

Material symbol, e.g. AISI, ASME, ASTM or ISO

Bonnet/cover [including

melt identification (e.g.

heat number)]

7 Trim identificationb:

Symbols indicating material of stem and sealing faces of

closure members if different from that of body

Nameplate

8 Nominal valve size

Full-opening valves: nominal valve size

Reduced-opening valves: shall be marked as specified in

7.3(API 6D)

Body or nameplate or both

(where practicable)



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No. Marking Location

9 Ring joint groove number Valve flange edge

10 SMYS (units) of Valve end, where applicable Body weld bevel ends

11 Flow direction (for check valves only) Body

12 Seat sealing direction (valves with preferred direction only) Separate identification

plate on valve body

13 Seat test per clauses B.10, B.11, B.12 for DBB, DIB-1 or DIB-

2 (API 6D), respectively (where applicable)

Nameplate

14 Unique serial number Both body and nameplate

15 Date of manufacture(month and year) Nameplate

16 ISO 14313c

Nameplate

Appendix C

Table 2: Marking Example

Table 2- Marking Example

On the Body

PTBMI Item 1: name of manufacturer

PN 100 or 600 Item 2: pressure class

WCC Item 5: body material

DN 200 or 8 Item 8: nominal valve size

R49 Item 9: ring joint identification on flange edge

12345 Item 14: serial number

On the bonnet/cover

3344 Item 6: bonnet/cover melt identification (cast or

heat No.)

On nameplate

PTBMI Item 1: manufacturer

PN 100 or 600 Item 2: pressure class

10,4 MPa or 104 bar at -29°C ; 1500 psi at

-20°F

Item 3: maximum operating at minimum operating

temperature

10,2 MPa or 102 bar at 121°C; 1478 psi at

250° F

Maximum operating pressure at maximum

operating temperature

WCC Item 5:body material

Stem CR13 Item 7: trim identification

Disc CR13

Seat CR13

or

CR13 CR13 CR13

or



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CR13

CR13

CR13

664 mm or 26.13 Item 4: face to face /end to end dimension

DN 200 or 8 Item 8: nominal valve size for full-opening valve

or

DN 200 x 150 or 8 x 6 Item 8: nominal valve size for reduced-bore valve

or

DN 200R or 8R Item 8: nominal valve size for reduced-bore valve

SMYS 276MPa or 40KSI Item 10: SMYS (Specified Minimum Yield

Strength)

DBB,DIB-1 or DIB-2,

as applicable Item 13: When seat tests per Clause B.10 ,B.11 or

B.12 respectively

12345 Item 14: serial number

4-07 or 4/07 Item 15: date of manufacture

ISO 14313 Item 16: number of this International Standard

Appendix D

Table 3: Marking requirements and location (API 16A)

Table 3 - Marking requirements and location (API 16A)

Marking Drilling spools and

adapters

Loose connector

ISO 13533 or API 16A Nameplate and/or body Connection OD a,b,c

Manufacture’s name or mark Nameplate and/or body Connection OD a,b,c

Serial number (if applicable) Nameplate and/or body

Size designation Nameplate and/or body Connection OD a,b,c

Rated working pressure Nameplate and/or body Connection OD a,b,c

Temperature rating Nameplate and/or body Connection OD a,b,c

Manufacture’s part number Nameplate and/or body Connection OD a,b,c

Date of manufacture Nameplate and/or body Connection OD a,b,c

Product description code (API 16A) –

refer Table 4

Nameplate and/or body Connection OD a,b,c

Ring groove designation Nameplate and/or body Connection OD a,b,c



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Appendix E

Table 4: Product description code

Table 4 - Product description code

Code Description

AA Equipment type (see Table 5)

BB Size designation (see Table 6)

CC Rated working pressure (see Table 7)

DD Temperature rating (see Table 8)

EEEE Date of manufacturer

Appendix F

Table 5: Equipment type

Table 5 - Equipment type

Generic description of equipment Code AA

Single Ram BOP 01

Double ram BOP 02

Single annular BOP 03

Double annular BOP 04

Drilling spool 05

Adapter 06

Triple ram BOP 07

Hydraulic connector 08

Clamp 09

Other 99

Appendix G

Table 6: ISO equipment size designation

Table 6 - ISO equipment size designation

ISO size designation Code BB

mm (in)

179 7 1/16 07



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228 9 09

279 11 11

346 13 5/8 13

425 16 3/4 16

476 18 3/4 18

527 20 3/4 20

540 21 1/4 21

680 26 3/4 26

762 30 30

Appendix H

Table 7: Rated working pressure

Table 7 - Rated working pressure

Rated working pressure Code CC

MPa (psi)

13,8 2000 02

20,7 3000 03

34,5 5000 05

69,0 10000 10

103,5 15000 15

138,0 20000 20

Appendix I

Table 8: Temperature ratings (Metallic materials)

Table 8 - Temperature ratings (metallic materials)

Operating temperature range Code DD

ᵒc ᵒf

-59 to 121 -75 to 250 75

-29 to 121 -20 to 250 20

-18 to 121 0 to 250 00



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Appendix J

Table 9: Marking requirement and locations

Table 9 – Marking requirement and locations

Marking Location

Connections and fitting Loose connector

ISO 10423 Nameplate and/or body OD of connector

Temperature class or upper

and lower operating

temperature range rating

Nameplate and/or body OD of connector

Material class Nameplate and/or body OD of connector

Product specification level Nameplate and/or body OD of connector

Performance requirement

level

- -

Nominal size (bore if

required)

Nameplate, body and/or

connector OD

OD of connector

Thread size (threaded

products only)

Nameplate, body and/or near

each thread

OD of connector

End and outlet connector size Nameplate or body and each

connector OD

OD of connector

Rated working pressure Nameplate or body and each

connector OD

OD of connector

Ring gasket type and number Near each connector OD of connector

Date of manufacture Nameplate and/or body OD of connector

Manufacturer’s name or

mark

Nameplate and/or body OD of connector

Serial number ( if applicable) Nameplate and/or body OD of connector

Hardness test values (if

applicable)

Adjacent to test location Adjacent to test location



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Appendix K

Figure 2: Sample of applicable API specification for the monogrammed product


Documents

API 6A Monogram