killer007 发表于 2017-11-16 17:27:04

BS EN 12560-3 2001 Flanges and their joints — Gaskets for Class-designated fla

BS EN 12560-3 2001 Flanges and their joints — Gaskets for Class-designated flanges — Part 3： Non-metallic PTFE envelope gaskets




admin 发表于 2017-11-17 11:07:20

谢谢您的分享，金币已奖励!
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