... Passivation, Phosphating, Shot Blasting2.Carbon Alloy Tube Application:Boiler, Superheater and Heat-ExchangerProduction Standard, Steel NO:ASTM A213 ... and similar heat transfer apparatus.Production Standard, Steel Grade:ASTM A179 Delivery Conditions:Annealed, Normalized, ... of precision equipments, instruments and apparatusProduction Standard, Steel No:DIN2391 St35,St45,St52ASTM A519 1010, 1020 ...