... pipes,AISI201,202,304,304L,316.316L,409 etc stainless weld steel pipestrickly follow the ASTM A544,and othersFeacture1.Grade AISI201 ... .2.Applied field for food industry,supply and drainage water pipe,mst and fence,sewerage,furnishing,machinery as well as liquid ... .Tolerance1)outsidediameter +-0.15mm2)Thickness +-10%of wall thickness stainless weld pipe