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 machine cut, 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.