SC Boiler Installation Practice Questions - South Carolina Boiler Installation Contractor Examination Exam

For the same nominal pipe size, how does Schedule 80 carbon-steel pipe differ from Schedule 40?

Schedule 80 has a larger inside diameter and thinner wall Schedule 80 has a thicker wall and a smaller inside diameter; outside diameter stays the same Schedule 80 changes only the steel grade, not the wall Schedule 80 is used only for copper tube

Correct Answer:

Schedule 80 has a thicker wall and a smaller inside diameter; outside diameter stays the same

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