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. Application: *Air water cooler unit *Product coolers - gas, chemicals, petrochemicals, oil etc. *Heat exchangers *Boiler,Dryer *Air condtioner, Air condenser