The pipe wall thickness is minimum for a pipe of given nominal size having schedule number___________________?
Correct answer: D. 40
- A. 160
- B. 120
- C. 80
- D. 40
Explanation
For a fixed nominal pipe size, a higher schedule number indicates a thicker pipe wall. Therefore, among 160, 120, 80 and 40, schedule 40 has the minimum thickness.
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