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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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. Z: y( O5 b! X6 R2 b2 z4 Oflanges and their joints - circular flangers for pipes,
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part 1 steel flanges
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5 M$ [9 z% \- Mhttp://www.3dportal.cn/discuz/vi ... ht=BS%2BEN%2B1092-1 |
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