liuxilin1215 发表于 2016-3-3 16:36:17

ASTM A216/A216M-14e1 Standard Specification for Steel Castings, Carbon, Suitable

ASTM A216/A216M-14e1 Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service

admin 发表于 2016-3-4 15:53:25

谢谢您的分享，金币已奖励！
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