SC Pressure And Process Piping Practice Questions - South Carolina Pressure And Process Piping Contractor Examination Exam

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Before welding a socket-weld joint on B31.1 or B31.3 piping, how far should the pipe be withdrawn from the socket shoulder?

The pipe should be jammed hard against the shoulder with zero gap Approximately 1/16 in (about 1.5 mm) to leave an expansion gap 1/2 in so the fillet can flow into the socket The full socket depth so the pipe never enters the fitting

Correct Answer:

Approximately 1/16 in (about 1.5 mm) to leave an expansion gap

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