The finned tubes of air cooler are mainly: L-type winding finned tube, mosaic finned tube, whole rolling finned tube, composite finned tube (bimetallic finned tube). How to choose the fin material of air cooler bundle fin Tube 1. In the refining and petrochemical industry, the finned material is mostly aluminum. The outer tube of bimetallic generally uses aluminum alloy tube containing silicon manganese, which is helpful to improve the hardness of rolled out fins. 2. In the power industry and other industries, sets, welded sheets or wrinkled winding more carbon steel strip, if the surface of these fins simply plated with zinc, tin or aluminum can greatly extend the service life. 3. Stainless steel is used as finned material only if the corrosion prevention requirements are high or if there are special process manufacturing conditions.
