... ; (2)Material: 201, 202, 304, 304L, 316,316 Stainless Steel Round(1)Name: Stainless Steel Welded TIG Tube (2) Manufacturing Standard ... , 320 Grit; Polish: 400 Grit and 600 Grit.(5). Specification. Round Pipe: OD range from 6mm~159mm. WT range from 0 ... , mechanic making, car care bars, car exhaust tubes. Stainless Steel Round