ygs67 发表于 2015-7-2 09:49:54

ASTM A568_A568M-13ae1

ASTM A568_A568M-13ae1 Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements for

admin 发表于 2015-7-2 11:39:50

谢谢您的分享,金币已奖励!
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