ygs67 发表于 2015-12-10 22:26:05

ASTM B301_B301M-13

ASTM B301_B301M-13 Standard Specification for Free-Cutting Copper Rod, Bar, Wire, and Shapes

admin 发表于 2015-12-11 09:36:34

谢谢您的分享，金币已奖励!

eriklau 发表于 2017-8-11 18:59:00

好资料要分享，资料好难找啊
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