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Range of sizing ratio for cold expansion

Thread starter gr2vessels
Start date Jul 20, 2015

Status: Not open for further replies.

Jul 20, 2015

gr2vessels

Mechanical

Can anyone please explain the following:
API 5L allows a range of sizing ratio for cold-expanded pipe 0.3 - 1.5%. However, many specifications and manufacturers narrow the range to 0.8 - 1.5% (no heat treatment). What is the reason to use lower limit 0.8 against of API 5L allowed 0.3%?
Cheers,
gr2vessels