... . Surface treatment: mirror, 2B, 2A, BA, brushed finish etc Thick Wall Big Diameter Stainless Steel Seamless Tube1. ISO, CE, CPD, CPI ... , 2A, BA, brushed finish etc4. Techinique: Cold drawn, cold-rolled5. Material: 201,202,301,304,304L,321,TP316I,316L,310s,317L ...