... SS,CS,Alloy 4.Standard:ASME,BS,GOST,eg 5.API,ISO,CE, SAW Steel Tube 1.Brand name:Yingfa2. ... Fax:0086-311-85981938We guarantee:Professional manufacturers of steel tube/pipe with stable company operation. Much experience in quality control,customer ... widely used for structure,machinery,liquid transportation,line pipe,casing and construction,line pipe,casing and construction..Production Capacity5,000 MT ...