SOLAS Pipefitting Practice Questions - SOLAS Ireland Pipefitting Apprenticeship Exam

On a piping isometric, a line is labelled "4" SCH 40". What does the "SCH 40" designation specify?

The nominal bore diameter in millimetres The wall thickness/strength class of the pipe The maximum operating pressure in bar The grade of carbon steel material

Correct Answer:

The wall thickness/strength class of the pipe

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