... produce the pipes,from the material picking,rolling,striping,pipe making,polishing,and package all these procession.Brand NameZaiHuiCertificationISO ... ,HL,2B,Satin,Mirror.light,shiny,bright,brushed,matRound pipe Outer Diameter9.5mm to 219mmThickness0.25mm to 3.0mmpipe ... length3000mm to 8000mmSquare & Rectangular pipe Side length10*10mm to 150*150mmThickness0.25mm to 3. ...