... Stainless Steel Pipes, Tubes and Tubings are designed for Boiler and any other Pressure and Heat Pipes. ASTM A249 ... from the austenitic steels, with various grades intended for such use as boiler, superheater, heat exchanger, ... shall be cold worked either in both weld and base metal or in weld metal only. The ... specimens from two stainless steel pipes/tubes for lots of more than 50 tubes.Flattening ...