Stainless Steel Pipe and Tube 1. OD: 12-219mm 2. WT: 1-5mm 3. Standard: GB, ASTM 4. Material: Stainless Steel Type: ... Material: Stainless SteelCertificate: ISO, ASTM, GB Size(12-219) x (1-5) x (800 - 13000)mmMaterial Grade304, 304L, TP304, TP304L, 316L ... Finish Mirror Finish, Wire Drawing or Hairline FinishRoughness Average: 0.1~0.2μm Outside, 0.3~0.4μm Inside ...