ygs67 发表于 2018-3-14 15:39:26

ASTM A234 A234M-18

ASTM A234 A234M-18 Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service

admin 发表于 2018-3-14 16:34:28


谢谢您的分享，金币已奖励!

liyanlong 发表于 2018-4-19 10:57:06

好资料 谢谢分享,期待越来越多的好资料:):)

liyanlong 发表于 2018-4-20 09:28:36

好东西谢谢分享:):):):):)
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