asnt2012 发表于 2018-7-9 11:20:07

BS EN 10305-5 2016 Steel tubes for precision applications - Technical delivery c

BS EN 10305-5 2016 Steel tubes for precision applications - Technical delivery conditions - Part 5: Welded cold sized square and rectangular tubes

admin 发表于 2018-7-11 12:21:36

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hmgongyong 发表于 2019-12-24 14:42:49

感谢楼主分享好的资料！

宁静静宁001 发表于 2019-12-29 08:42:55

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zhzhyun021707 发表于 2023-3-21 10:59:13

谢谢您的分享,金币已奖励!
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