killer007 发表于 2017-11-16 18:07:27

BS 1560-3.2-1989 Circular flanges for pipes, valves and fittings (Class designat

BS 1560-3.2-1989 Circular flanges for pipes, valves and fittings (Class designated) — Part 3 Steel, cast iron and copper alloy flanges — Section 3.1 Specification for cast iron flanges




admin 发表于 2017-11-17 11:09:32


谢谢您的分享，金币已奖励!
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