Only circumferentially finned tubes are used in Agetherma heat exchangers.
The core tube can be fabricated from either stainless steel or carbon steel; the fin is made from either stainless steel or carbon steel or aluminium.
The choice of fin shape and fin material is agreed with the customer and depends on what s/he requires from the heat exchanger.
Finned tubes are, for example, used for:
Heating of clean air or exhaust gas as well as cooling or desuperheating of clean air or exhaust gas and air-cooled systems.