... 4)ISO9001:2000 motorcycle part1) comodity:motorcycle side goods carrier2) Material:Staniless steel composite pipe(Extemal Layer,stainless steel201/304,internal layer ... ,1.5mm,1.8mm,2.1mm).4) Thickness tolerance of steel pipe:±0.1mm,Length:±6mm5) Design:Can be according to ... ,Xinyuan,ZongShen,Longxin,Suzuki,DaYun,and etc. produce motorcycle part ( goods shelf)