My heat transfer technology is a professional manufacturer of industrial fin tubes, widely used in dryer, air/oil-cooler, heater, heat recovery, heat exchanger etc., which is by adding the fins on the surface area or surface area of the heat exchange tube, so as to improve the thermal efficiency. Extruded fin tube Fin material: aluminium 1060, 1050, 1070, 6063, 6061, 3003 Fin type: extruded, Fin size: od25mm~od85mm, Fin thickness:0.25mm~1mm, Fin per inch: 5~12; Fin length: 300mm~18000mm; Base tube material: sa179, sa789 s31803, ss304, ss316l, sa334, sa249, c44300, c68700, c71500, c70600, c12200, uns8800, uns4400, in825, titalium etc. Manufacture: A core tube is fitted into an aluminium primary tube. This assembly is then fed into the triple-spindle finning machine. Three special multi-disc packs extrude the aluminium tube into helical high fins while reducing the inner diameter to give firm pressure contact with the core tube.