ygs67 发表于 2018-1-3 16:18:51

ASTM A400-17

ASTM A400-17 Standard Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties

admin 发表于 2018-1-8 15:29:21

谢谢您的分享，金币已奖励!
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查看完整版本: ASTM A400-17