GB/ T 6728-2002 Cold formed steel hollow sections for general structure Thestandard is applicable to round, rectangular and square cold forming hollow sectional steel made of cold-rolled or hot-rolled steel plates, sheets and strips on continuous roll cold forming units. It is also appli
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Scope:Thespecification covers cold-formed welded and seam-less carbon steel round,square, rectangular, or special shapestructural tubing for welded, riveted, or boltedconstruction ofbridges and buildings, and for general structural purposes.Yuantai Group produces
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TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD
