ygs67 发表于 2015-11-18 14:39:57

ASTM A336_A336-10

ASTM A336_A336-10 Standard Specification for Alloy Steel Forgings for Pressure and High-Temperature Parts

admin 发表于 2015-11-19 10:25:24


谢谢您的分享,金币已奖励!
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