... TypeApplicationStandardMaterialalloy steel pipeit is used in petroleum,chemical,electric power,boiler etc as they Resistance to ... , metallurgy, food, water conservancy,electric power, chemical industry,Chemical, chemical fiber, pharmaceutical machinery, etcASTM A213ASTM A312304304L316316L321steel pipe ... liquid transportationSY/T5037-2000A53A333 GR6 Spiral steel pipe for low-pressure fluid transport ...