... A249 Stainless Steel Pipes, Tubes and Tubings are designed for Boiler pipeline and Heat-exchanger tubes. Stainless steel pipes & tubes are ... used for many areas as follows:1. heat-exchanger, condenser, boiler parts and superheater.2. pressure pipes, petroleum transmission pipes, petrolchemical ... and so on. ASTM A249 Stainless Steel Pipes & Tubes for Boiler pipeline