About welds, in accordance with NACE MR0175/ISO 15156, Part 2, Item 220.127.116.11, “hardness acceptance criteria for welds,” “weld hardness acceptance criteria for steels selected using option 1 (see 7.1) shall be as specified in A.2.1.4. Alternative weld hardness acceptance criteria may be established from successful SSC testing of welded samples. SSC testing shall be in accordance with Annex B.” So, in our understanding, if our welding procedure qualifications (WPSs) are qualified in accordance with NACE MR0175/ISO 15156, Part 2, Item A.2.1.4, it is not necessary to test them according to NACE TM0177. We would like you to confirm whether our interpretation below is correct and if not give us the correct interpretation.
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