... , Phosphating, Shot Blasting2.Carbon Alloy Tube Application:Boiler, Superheater and Heat-ExchangerProduction Standard, Steel NO:ASTM A213 T11, T12, T22, T5 ... , Shot Blasting 3.Tube for Heat Exchanger and Condenser Application:For tubular heat exchangers,condensers and similar heat transfer apparatus.Production Standard, Steel Grade ...