... , Varnish, Passivation, Phosphating, Shot Blasting2.Carbon Alloy Tube Application:Boiler, Superheater and Heat-ExchangerProduction Standard, Steel ... Varnish, Passivation, Phosphating, Shot Blasting. 4.Boiler Tube Application:For high, middle, low pressure boiler and ... Shot Blasting 5.Tube for Mechanical and Automobile Application:Backbone of Automobile and rear axle tubeManufacturing and processing ...