API 5L Out of roundess and ovality
API 5L Out of roundess and ovality
(OP)
Hey all
I have 24" pipe (610 mm) and I am trying to figure out (out of roundess) spec. According to API 5L, it is 0.020D and 0.015D for pipe end. How do I calculate ovality % that the pipe needs to be within.
Thanks
I have 24" pipe (610 mm) and I am trying to figure out (out of roundess) spec. According to API 5L, it is 0.020D and 0.015D for pipe end. How do I calculate ovality % that the pipe needs to be within.
Thanks





RE: API 5L Out of roundess and ovality
When checking the diameter you generally first measure the pipe circumference in order to establish the actual diameter.
RE: API 5L Out of roundess and ovality
RE: API 5L Out of roundess and ovality
RE: API 5L Out of roundess and ovality
A - API sez "0.02D" which equals 2%. And the client [only] wants 4.9% So the pipe is fine.
B - To actually measure 24" pipe, you need 30"(+) calipers. Then take the least diameter found, and at that same place get the max. diameter - should be 90° out from least. tankman64 has already given you the formula. Use it. Send the client a report of your findings.
Simple.