ISO 9001 API CERTIFICATE COMPETITIVE PRICE EXCELLENT seamless steel pipe, seamless pipe, seamless steel tubeCompany NameHebei Dingsheng Pipe Co., LtdBusiness Type:Manufacture and ExporterProductCarbon seamless steel pipe, Alloy pipe , welded pipe ,stainless steel pipe .Spec DescriptionChineseEnglishOutside DiameterWall Thickness Outside DiameterWall Thickness10 to 3800mm1mm to 601/2'' to 150' ...