... ,JISB,GOST,etc 4)material:mild steel 5)API,ISO,CE,etc BG SAW steel pipe TypeApplicationStandardMaterialalloy steel pipeit is used in petroleum,chemical ... A335P22A335P5A335P9A335P91stainless steel pipeApplies to oil, aviation, metallurgy, food, water conservancy,electric power, chemical industry,Chemical, chemical fiber, pharmaceutical machinery, etcASTM A213ASTM A312304304L316316L321steel pipe ...