ygs67 发表于 2015-6-17 10:34:43

ASTM A858 A858M-13

ASTM A858 A858M-13 Standard Specification for Heat-Treated Carbon Steel Fittings for Low-Temperature and Corrosive Service

admin 发表于 2015-6-18 08:32:58

谢谢您的分享,金币已奖励
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