stainless steel car exhaust pipe/tube 1.Appliccation:exhaust system 2.Perforated round hole stainless steel car exhaust pipe/tube description: 1) Standard: JIS, AISI ... ,321,316,316L,4307) Surface: mirror polish, satin finish8) Applicati7n: exhaust system9) Perforated round hole10) Packing:as customer's requirement stainless ...