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国家标准局继颁布GB4982-85《夹紧型真空快卸法兰》和GB4983—85 《拧紧型真空快卸法兰》之后,最近又以国标发〔1985〕333号文颁布下列真空标准:1.GB6070.1-85《真空法兰公称通径》;2.GB6070.2-85《真空法兰连接型式》;3.GB6070.3-85《固定真空法兰》;4.GB6070.4-85《活套真空
Following the promulgation of GB4982-85 “Clamp-type vacuum quick-release flange” and GB4983-85 “Tightening vacuum quick-release flange” by the National Bureau of Standards, the following vacuum standards were promulgated recently by Guo Ba Fa [1985] No. 333: 1 .GB6070.1-85 “Nominal diameter of vacuum flange”; 2.GB6070.2-85 “vacuum flange connection type”; 3.GB6070.3-85 “fixed vacuum flange”; 4.GB6070.4- 85 "Looper vacuum