liuxilin1215 发表于 2018-10-29 09:12:43

DIN 87101-2003 Non-return flaps (storm valves), self-closing, verticai type, DN

DIN 87104-1975已被替代：
DIN 87101-2003 Non-return flaps (storm valves), self-closing, verticai type, DN 50 to DN 150, PN 1 一 Mating dimension for flanges according to PN 10








admin 发表于 2018-11-5 14:55:46

谢谢您的分享，金币已奖励!
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