ygs67 发表于 2015-6-18 09:28:24

ASTM A707 A707M-13

ASTM A707 A707M-13 Standard Specification for Forged Carbon and Alloy Steel Flanges for Low-Temperature Service

admin 发表于 2015-6-23 11:40:08

谢谢您的分享,金币已奖励!

转角累 发表于 2016-10-9 15:15:12

正需要，谢谢楼主分享！
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