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English Translations » 【机械/加工制造】 » For the **standards of metal-graphite wound gaskets

For the **standards of metal-graphite wound gaskets

2017-05-10View Original

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**Do the current standards specify exact dimensions for the inner and outer diameters of DN***/PN***?
Reply #22017-05-27
Yes, the Ministry of Chemical Industry and petrochemical standards all specify clear size requirements
Reply #32017-06-21
HG-T 20631-2009 Steel pipe flange wound gaskets (Class series): This corresponds to the American standard flange system, with grades CL150, CL300, CL600, CL900, CL1500, CL2500. HG 20610-1997 Wound gaskets for steel pipe flanges (European system): This corresponds to the national standard flange system, with grades PN1.0, PN1.6, PN2.5, PN4.0, PN6.3, PN10.0, PN16.0

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Translated at 2026-07-21 20:43:19

Original: https://bbs.hcbbs.com/thread-1777429-1-1.html

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