This standard covers raised-face carbon steel welding-neck flanges in NPS 26 through NPS 60 with pressure ratings of Classes 75@ 150@ 300@ 400@ and 600@ and in NPS 26 through NPS 48 with a pressure rating of Class 900. It also covers integral flanges for Classes 75@ 150@ and 300@ cast or forged as the integral ends of flanged valves@ fittings@ or nozzle necks.
STD 605 ERTA-1984由API - American Petroleum Institute 发布于 1984-01-01,并于 2012-02-22 实施。
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