Basic question but I don't know the history - why do we limit pipe to 21-foot lengths? Manufacturing limitation? Transportation? Just curious on the history there.
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3 Comments
Derek
5/9/2019 10:16:22 am
Sch. 40 black steel also comes bundled in 25 ft. lengths. Not sure of the history, but as a fitter I've used both 21s and 25s.
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TJ Jones III
5/9/2019 10:17:51 am
You can order pipe in 25' lengths. But the reason 21' has become the standard is due to the production of steel pipe. A heated length of steel is pulled through a hole that will shape it in a tube. 21' was a good length to maintain strength of the steel pipe.
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Wayne Ammons
5/9/2019 10:18:17 am
I actually had this same curious question last year and here is the response I got from a contact at Wheatland:
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