killer007 发表于 2017-11-16 17:27:59

BS EN 12560-6 2003 Flanges and their joints — Gaskets for class-designated fla

BS EN 12560-6 2003 Flanges and their joints — Gaskets for class-designated flanges — Part 6：Covered serrated metal gaskets for use with steel flanges




admin 发表于 2017-11-17 11:07:27

谢谢您的分享，金币已奖励!
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