... , Varnish, Passivation, Phosphating, Shot Blasting2.Carbon Alloy Tube Application:Boiler, Superheater and Heat-ExchangerProduction Standard, Steel ... Shot Blasting 3.Tube for Heat Exchanger and Condenser Application:For tubular heat exchangers,condensers and similar heat transfer ... Varnish, Passivation, Phosphating, Shot Blasting. 4.Boiler Tube Application:For high, middle, low pressure boiler and ...