Cast iron and copper valves with screwed connections

铁制、铜制和不锈钢制螺纹连接阀门
Cast iron,copper and stainless steel valves with screwed connections

2023-03-17

铁制和铜制球阀
Cast iron and copper alloy ball valves

1994-08-29

Circular flanges for pipes, valves and fittings (Class designated). Steel, cast iron and copper alloy flanges-Specification for cast iron flanges
管道、阀门和配件的圆形法兰（指定等级） 钢、铸铁和铜合金法兰

1990-03-30

Circular Flanges for Pipes, Valves and Fittings (Class Designated) - Part 3: Steel, Cast Iron and Copper Alloy Flanges - Section 1: Specification for Steel Flanges
管道、阀门和配件用圆形法兰（指定类别）.第3部分:钢、铸铁和铜合金法兰.第1节:钢法兰规范

1989-01-01