ASTM A554 A312 A270 A249 Stainless Steel half round Pipe 1. Excellent quality, low price 2. Rigorous test and inspection Product Specifications: ASTM A554 A312 A270 A249 Stainless Steel half round Pipe NameStainless Steel pipeStandardASTM A554, A249, A269 and A270, A312Material Grade201 ( Ni 0.92%),202 (Ni 3.5%~4.5%),301(Ni 5%)304 (Ni 8%, Cr 18%),316 (Ni 10%, Cr 18%),316L (Ni10%~14%),430Outer ...