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标题: ASTM A727 A727M-13 [打印本页]

作者: ygs67 时间: 2015-6-18 09:25:37 标题: ASTM A727 A727M-13

ASTM A727 A727M-13 Standard Specification for Carbon Steel Forgings for Piping Components with Inherent Notch Toughness

作者: admin 时间: 2015-6-23 11:40:06

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