Higher collar height above 10mm fins punched by Al material. fins with oblate, oval shape are more efficiency than normal one We can process a great variety of finished fins for clients,the fin surface pattern such as louver, surface slit, sewing machinecut,notching, corner cut, angled cut and zigzag cut with special-holes (oblate, oval and others); collar height range: fin collar height from 1.5mm to 12.0mm according to the aluminum's thickness,and from1.5mm to 4.0mm for copper's thickness in order to meet different demands.

High Collar Fin