huanhuan8184 发表于 2016-4-27 17:02:12

ASTM A 6-A 6M-12

ASTM A 6-A 6M-12   Standard Specification for General Requirements for Rolled Structural Steel Bars,Plates,Shapes,and Sheet Piling


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admin 发表于 2016-4-28 11:17:39

谢谢您的分享,金币已奖励!
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