标 准 号:GB 12383.6-1990简体中文标题:PN5.0MPa (50bar) 凸面球墨铸铁管法兰盖繁體中文標題:PN5.0MPa (50bar) 凸面球墨鑄鐵管法蘭蓋English name:Ductile iron pipe blank flanges with raised face for P...
标 准 号:GB 12380.4-1990简体中文标题:PN2.5MPa(25bar)凸面整体球墨铸铁管法兰繁體中文標題:PN2.5MPa(25bar)凸面整體球墨鑄鐵管法蘭English name:Integral ductile iron pipe flanges with raised face fo...
标 准 编 号:GB/T 15530.5-2008 简体中文标题:铜合金平焊环松套钢法兰繁體中文標題:銅合金平焊環松套鋼法蘭English Name:Loose piate flange in steel with a plate collar alloy for brazing and welding标准...
标 准 号:GB 12380.2-1990简体中文标题:PN1.6MPa(16bar)凸面整体球墨铸铁管法兰繁體中文標題:PN1.6MPa(16bar)凸面整體球墨鑄鐵管法蘭English name:Integral ductile iron pipe flanges with raised face fo...
标 准 编 号:GB/T 9116.1-2000 简体中文标题:平面、突面带颈平焊钢制管法兰 繁體中文標題:平面、突面帶頸平焊鋼制管法蘭 English Name:Hubbed slip-on-welding steel pipe flanges with flat face or raised f...