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GB/T 13401 version 2017

2018-03-29View Original

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Appendix B of GB/T 13401 version 2017 deals with fitting materials, which include pipes, sheets, bars, and forgings. Does this mean that for welded fittings, sheets should be used? For seamless fittings, should the pipe material be chosen? Are the bars and forgings also seamless? I would appreciate some guidance from experts, thank you!
Reply #22018-03-29
http://ishare.iask.sina.com.cn/f/137VtkSYVeE.html

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