zure1972 发表于 2015-7-24 13:34:22

ASTM A490-2014a

ASTM A490-2014a
Standard Specification for Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength

admin 发表于 2015-7-27 09:51:00


谢谢您的分享,金币已奖励!

lijing13715 发表于 2016-12-19 16:19:31

感谢您的分享:):):):(:(:(
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