The wall thickness of Schedule 40 is not heavy enough to thread. Adding wall thickness to a Schedule 40 pipe until sufficient material is under the threads would lead to a Schedule 80 pipe, not Schedule 40.
Title: Can Schedule 40 Pipe be threaded?
Description: Why you can't thread SCH40 Pipe.
Published: 6/2/2008
Last Edited: 12/29/2022
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