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English Translations » 【换热设备】 » Connection surface type of convex face butt-weld flanges

Connection surface type of convex face butt-weld flanges

2017-06-09View Original

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How should the connection surface type for a convex surface be written? Is the mating surface type convex, or is it the concave surface that pairs with it?
Reply #22017-06-09
Convex (M), Concave (FM): handshake
Reply #32017-06-09
It’s correct to write M for the joint surface type of convex face butt-weld flanges, right?
Reply #42017-06-10
Convex (M), Concave (FM) FM/M
Reply #52017-06-16
It is clearly specified in HG/T 20592-2009 \"Steel Pipe Flanges (PN) Series\". Therefore, the convex type is coded as M, and the concave type is coded as FM.

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Translated at 2026-07-26 09:32:04

Original: https://bbs.hcbbs.com/thread-1789667-1-1.html

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