asnt2012 发表于 2018-8-9 17:26:02

BS EN 754-7 2016 Aluminium and aluminium alloys - Cold drawn rod/bar and tube -

BS EN 754-7 2016 Aluminium and aluminium alloys - Cold drawn rod/bar and tube - Part 7: Seamless tubes, tolerances on dimensions and form

admin 发表于 2018-8-10 18:15:39

谢谢您的分享,金币已奖励!
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