high quality ISO9001:2000 original factory manufacturer CO2 Welding/Pure Nickel 8 Grade Electro-plating 1) comodity:motorcycle rear goods board2) Material:Staniless steel composite pipe(Exteral Layer,stainless steel 201/304,internal layer:carbon steel Q195~Q235),it does not rust.3) Tube size:diameter 25.4mm,Thickness(1.2mm,1.5mm,1.8mm,2.1mm).4) Thickness tolerance of steel pipe:±0.1mm,Length:± ...