ygs67 发表于 2015-7-1 14:01:11

ASTM A109 A109M-13

ASTM A109 A109M-13 Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled

admin 发表于 2015-7-2 11:33:56

谢谢您的分享,金币已奖励!
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