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国家质量技术监督局以 2 0 0 0年第 1 1号国家标准发布公告 ,其中有 33项是钢制管法兰 ,列于下表。序号标 准 编 号标 准 名 称被代替标准号1ＧＢ/Ｔ 91 1 2— 2 0 0 0钢制管法兰 类型与参数ＧＢ/Ｔ 91 1 2— 1 9882ＧＢ/Ｔ 91 1 3 1— 2 0 0 0平面、突面整体钢制管法兰
The State Bureau of Quality and Technical Supervision issued a circular with the national standard No. 1 of 2001, of which 33 are steel pipe flanges and are listed in the following table. Serial number standard number standard name is replaced by standard No. 1GB / T 91 1 2- 2 0 0 0 steel pipe flange type and parameters GB / T 91 1 2- 1 9882GB / T 91 1 3 1- 2 0 0 0 plane, Sudden overall steel pipe flange