... contact with the core tube. Extruded fin gives very good corrosion protection to the base tube, as the base tube is ... , charge air chillers, condensers, convection heaters, electric heaters, evaporators, fluid coolers, gas coolers, heat pipes, hydrogen coolers, industrial tumble dryers ... .Not mechanically stretched to adhere to the finsNo galvanic corrosion between the tube and finsVibration resistant