myshy1225 发表于 2016-9-19 11:38:25

ASTM A249/A249M-16a

ASTM A249/A249M-16a Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger,and Cindenser Tubes

WYG123 发表于 2016-9-19 12:07:36

感谢楼主分享！！！！！！！！

admin 发表于 2016-9-20 10:54:25

谢谢您的分享，金币已奖励!
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