ygs67 发表于 2015-11-9 10:17:35

ASTM A394-08(R15)

ASTM A394-08(R15) Standard Specification for Steel Transmission Tower Bolts, Zinc-Coated and Bare

admin 发表于 2015-11-9 16:01:51

谢谢您的分享,金币已奖励!
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