ygs67 发表于 2015-7-1 15:21:59

ASTM A479_A479M-13b

ASTM A479_A479M-13b Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels

admin 发表于 2015-7-2 11:34:50

谢谢您的分享,金币已奖励!
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