B31.3 Wall thinning
B31.3 Wall thinning
(OP)
Hi,
If I was to fabricate an extruded outlet header, there is going to be some wall thinning of the run pipe. Estimates I've seen are 7-15% of original thickness. Are these thinnings negligible when designing for run pipe internal pressure? THANKS.
If I was to fabricate an extruded outlet header, there is going to be some wall thinning of the run pipe. Estimates I've seen are 7-15% of original thickness. Are these thinnings negligible when designing for run pipe internal pressure? THANKS.





RE: B31.3 Wall thinning
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RE: B31.3 Wall thinning
Back to wall thinning. Can the reduction of thickness from the extrusion process be assumed to be negligible when designing the run pipe for internal pressure? For example, if my design conditions warrant a 2" SCH10 pipe and I make an extruded outlet header on it, do I have to take the wall thinning into account. I'm thinking that as long as the nominal thickness is greater that the minimum required by formulas, then I'm good. What do you think?
If this is the case, I'll need to make some samples to determine, experimentally, the actual amount of thinning that occurs.