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发表于 2009-6-7 10:51:50
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来自： 中国北京
bs en 1092-1: 2002 flanges and their joints - circular flangers for pipes...
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flanges and their joints - circular flangers for pipes, Q; t. t- m7 u
valves , fittings and accessories,PN designated-
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. I$ E% _$ S( f" `% X0 k( qhttp://www.3dportal.cn/discuz/vi ... ht=BS%2BEN%2B1092-1 |
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