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

Access More Questions

When calculating required wall thickness for seamless A106 pipe, why do designers add a 12.5% mill undertolerance to the pressure-design thickness?

Because ASTM A106 / A530 allow the delivered wall to be as much as 12.5% under the nominal thickness Because every pipe is 12.5% thicker than ordered and the extra must be ignored Because B31.3 requires a 12.5% corrosion allowance on every stainless line Because hanger spacing is always 12.5% of the span

Correct Answer:

Because ASTM A106 / A530 allow the delivered wall to be as much as 12.5% under the nominal thickness

Access more questions from this quiz

Continue to SC Pressure and Process Piping Practice Questions - South Carolina Pressure and Process Piping Contractor Examination Exam for more practice questions and the full quiz experience.

Access More Questions