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Tianjin Quantong Steel Pipe Co., Ltd. It was founded in 2003.Subsidiary Quanshun Anti-corrosion and insulating steel pipe co.,Ltd , Quantong Commerce Co., Ltd and TianjinQuantong Quanshun International Trade Co., Ltd ,etc three co***ny.It is an integrated enterprise which is specialized in producting double surface submerged arc spirally welded steel pipe ,Anti-corrosion and insulating steel pipe and import and export trade.Is located in Jinghai, Tianjin which is the earliest and largest production base fo...
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