Extruded finned tubes are mostly bimetallic composite finned tubes, which are in the form of base tube sleeved aluminum tubes. (The base tube can be made of carbon steel, stainless steel, copper，or Titanium) through the machine, extrusion to form fins. And the base of the fin and the tube The outer wall fits closely, So the heat transfer coefficient is high, and the heat transfer performance is excellent.
The extruded fin tube also can be made of pure aluminum or pure copper. And the aluminum rolled fin tube is integrally rolled from an aluminum tube. As it has no contact thermal resistance, high strength, thermal shock resistance, mechanical vibration, and thermal expansion performance. And has a considerable expansion of the heat exchange surface, the heat exchanger made of this finned tube is ahead of the string or wound fin heat exchanger.
Finned tube manufacturers