阀门标准 BS EN 736-2-1997 Valves Ð Terminology Part 2. Definition of components of valves.pdf [db:摘要] 4 年前 0 0 1.4K 18
阀门标准 BS EN 558-2008 Industrial valves. Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems.pdf [db:摘要] 4 年前 0 0 267 18
阀门标准 BS EN 558-2-1996 Industrial valves — Face-to-face and centre-to-face dimensions of metal.pdf [db:摘要] 4 年前 0 0 956 18
阀门标准 BS EN 558-1-1996 Industrial valves — Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems.pdf [db:摘要] 4 年前 0 0 404 18
