qzcp 发表于 2013-5-21 09:02:23

ASTM A 105/A 105M – 00 Standard Specification forCarbon Steel Forgings for Pip

ASTM A 105/A 105M – 00 Standard Specification forCarbon Steel Forgings for Piping Applications1

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sigh007 发表于 2013-5-21 11:18:41

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