killer007 发表于 2017-11-16 17:25:16

BS EN 12560-1 2001 Flanges and their joints — Gaskets for Class-designated fla

BS EN 12560-1 2001 Flanges and their joints — Gaskets for Class-designated flanges — Part 1： Non-metallic flat gaskets with or without inserts




admin 发表于 2017-11-17 11:07:14

谢谢您的分享，金币已奖励!
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