ygs67 发表于 2015-11-20 16:55:03

ASTM A521_A521M-06(R11)

ASTM A521_A521M-06(R11) Standard Specification for Steel,Closed-Impression Die Forgings for General Industrial Use

阿谢克那·李 发表于 2015-11-20 23:28:55

ASTM A521_A521M-06(R11)         

admin 发表于 2015-11-21 10:24:56

谢谢您的分享,金币已奖励!
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