Material Markings

Common materials inspection and markings inspection

ASME A-106/A-106M

Markings verification

  • ASME SA-106/SA-106M-2019 – Production Marking – Section 25
  • ASME SA-530/SA-530M-2019 – production Marking – Section 24

(sample markings)

Each length of pipe shall be legibly marked with (eg.)

  • The manufacturer’s name or brand: BCK.
  • The specification number: ASME SA-106/SA-106M.
  • Grade: B.
  • Heat number: 3-35727.
  • ASME SA-106/SA-106M – Table 4: NDE/2500 PSI.
  • The length: 6000 MM.
  • The OD: NPS 3″.
  • The Schedule: SCH XXS.
  • The weight: not applicable for NPS 3″.
  • Supplementary: not applicable.

Note:

  • This material do not cover welded pipe, see Section 1.1 of ASME SA-106/SA-106B.
  • NPS 4″ and larger shall marked weight class.
  • Production analysis shall be made on the representative two pipes from each lot, see Section 9.1 of ASME SA-106/SA-106M.

Dimensional and visual inspection

  • Forming/dimension/masses:  ASME B36.10M – 2018; ASME SA-530/SA-530M – Table X1
  • Tolerance: ASMESA-530/SA-530M – Section 7, 8, 9, 10, 11, 12 – Table 1, 2, 3

Transfer markings

Guide to transfer markings information to a shorter length:

  • Step 1: Verify MTC and pipe section are matched, dimensional / visual inspection for each pipe.
  • Step 2: Transfer original markings to cut off length (unmarked cut length) by paint marker
  • Step 3: Stamp “processor’s name or trademark, brand (for resale) on both pipe segment.
  • Step 4: Shot photo of the original markings and new transfer identification for preparing a report, photo report should minimum show all production markings, processor’s identification, buyer name, date, signature, … and attachment the MTC.
  • Step 5: Cut the shorter length for resale by processor.

Coded markings

  • Coded marking: Pxxxx – Pipe.
  • Die stamp may be stamped on the thickness with T>= 6mm for carbon steel and  T>= 12 mm for stainless steel unless otherwise by supplementary requirements.
  • Piping process fabrication may not required die stamp on the off-cut length.

End beveling preparations

  • Accordance with the approved WPS.
  • ASME B16.25 2017 – Fig. 1 through Fig. 6.

Storage pipe material

  •  Keep pipe material in dry area, keep away wet condition.
  • All end pipes shall be protected by plastic covers.

ASME A-516/A-516M

Markings verification

  • ASME SA-20/SA-20M-2019 – Production Marking – Section 13

Plate shall be legibly marked with (eg.):

  • The specification number: SA-516.
  • The manufacturer’s name or brand: BCK.
  • Grade:  GR.70N.
  • Heat number: 3-5642.
  • Plate identifier: 111-1.
  • Heat treatment: MT.
  • Additional: length, client, dimension, …

Code marking

  • Code marking: Txxxx – Plate.
  • Die stamp may be stamped on the thickness with T>= 6mm for carbon steel and  T>= 12 mm for stainless steel unless otherwise by supplementary requirements.

Dimensional and visual inspection

  • Dimension/masses:  ASME SA-20/20M – 2019 Section 14.

Transfer markings

Guide to transfer markings information to the off-cut pieces:

  • Step 1: Verify MTC and original markings are matched, dimensional / visual inspection for each plate.
  • Step 2: Transfer the original markings to the off-cut pieces (unmarked cut pieces) by paint marker
  • Step 3: Stamp “processor’s name or trademark, brand (for resale) on both pieces, see Section 13.4 of SA-20/SA-20M.
  • Step 4: Shot photo of the original markings and new transfer identification for preparing a report, photo report should minimum show all production markings, processor’s identification, buyer name, date, signature, … and attachment the MTC.
  • Step 5: Cut the plates into aspect size for resale by processor.

ASME B16.5

  • Dimensional inspection: ASME B16.5 2017 – Section 6.
  • Tolerance: ASME B16.5 2017 – Section 7.

ASME B16.9

  • Dimensional inspection: ASME B16.9 2018 – Section 6 and Table 6.1.
  • Tolerance: ASME B16.9 2018 – Section 11 and Table 11-1.

ASME B16.11

  • Dimensional inspection: ASME B16.11 2016 – Section 6.
  • Tolerance: ASME B16.11 2016 – Section 7.

Bolting & gasket

ASME SA-193/SA-193M – 2019

  • Marking SA-193/SA-193M – Section 15 and ASME SA-962/SA-962M Section 20.3; 20.8.

 

ASME SA-194/SA-194M – 2019

  • Marking SA-194/SA-194M – Section 13 and ASME SA-962/SA-962M Section 20.4; 20.8.

ASME SA-307 – 2019

  • Marking SA-307 – Section 13.

ASME SA-325 – 2019

  • Marking SA-325 – Section 15.

ASME SA-563 – 2019

  • Marking SA-563 – Section 14.

ASME B16.20 – 2017 Gasket RJ

  • Marking ASME B16.20 2017 – Section RJ-4 and Table RJ-4.
  • Dimensional inspection: ASME B16.20 2017 – Section RJ-5 and Table RJ-5.
  • Identification number: ASME B16.20 2017 – Section RJ-7 and Table RJ-5.

ASME B16.20 – 2017 Gasket SW

  • Marking ASME B16.20 2017 – Section SW-4 and Table SW-4.1.
  • Dimensional inspection: ASME B16.20 2017 – Section SW-2 and Table SW-2.1.
  • Color coding: ASME B16.20 2017 – Section SW-4.3 and Table SW-3-1.

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