leunghb 发表于 2013-12-17 13:18:58

ASTM A568/A568M-09 Steel, Sheet, Carbon, Structural, and High-Strength, Low-Allo

ASTM A568/A568M-09

Standard Specification for
Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements for

admin 发表于 2013-12-17 15:07:46

谢谢您的分享，金币已奖励！

mechen 发表于 2013-12-18 07:52:26

论坛提供多种方式获取金币

tigernut 发表于 2018-7-6 16:57:16

金币不够:L 怎么办怎么办
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