ermanent stress
ipelines;Safety;Safety engineering;Safety requirements;Sealing;Shut-off valves;Specification (approval);Stop valves;Strength of materials;Strength tests;Testing;Tightness;Types;Valves;Welding;Welding engineering;Welding equipment【摘要】: 【中国标准分类号】: J16【国际标准分类号】: 23_060_10【页数】: 16P.;A4【正文语种】: 德语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |