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killer007 发表于 2017-11-16 18:05:02

BS EN 1759-4-2003 Flanges and their joints — Circular flanges for pipes, valve

BS EN 1759-4-2003 Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, class designated — Part 4：Aluminium alloy flanges

admin 发表于 2017-11-17 11:07:48

谢谢您的分享，金币已奖励!

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