Gas Pipe Fittings-Ningbo Hongwu Pipe industry Co.,Ltd.
Stainless steel seamless knowledge Classification of stainless steel ... ( 1 ) Seamless - hot-rolled pipes, cold-rolled , cold drawn tubes, extruded tube , top tube . ... gas pipe, stove pipe (b) by weld points - longitudinally welded pipes, spiral welded ... concave steel, oval -shaped steel , conical steel pipe, corrugated steel pipe, ...
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cstzgg's website is cstzgg.com