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B31.3 Socket Weld Cap

B31.3 Socket Weld Cap

B31.3 Socket Weld Cap

(OP)
Is there anything in B31.3 indicating a two pass cap on a socket weld, or is this more of an engineering recommendation?

RE: B31.3 Socket Weld Cap

Your suspicions are correct.  Code is silent, so the prudent "2 pass minimum" belongs in your company wilding specification.

And yes, I always require a 2-pass minimum. Have seen a number of single-pass welds leak, over the years.

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