lyklzy 发表于 2016-5-13 22:31:16

ISO 11970-2016 Specification and qualification of welding procedures for product

ISO 11970-2016 Specification and qualification of welding procedures for production welding of steel castings


gbt8163 发表于 2016-5-14 16:23:24

多谢楼主分享如此好资料

admin 发表于 2016-5-16 09:32:50

谢谢您的分享,金币已奖励!

ir_71 发表于 2017-1-26 00:53:23

Thank you very much for sharing!
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