Dear all
We have a previous project qualified welding procedure, but hardness test carried out in old method in that pqr, present project spec is saying that requirement of test as per NACE MR0715 ISO 15156. i have some doubts about it
we can weld a coupon as per wps and do the hardness test as per nace requirment or need to qualify newly with all tests
pls send the reply with code reference
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