Overview of spiral wound finned tubes

The fin is helically wound around the tube forming a strong mechanical contact between the tube and fin. Several types of fin attachments provide excellent service life in a variety of applications. In heavy duty applications the fins can be permanently bonded to the tube by using solder or braze.
During the manufacturing process, fin material is tightly wound around the outside of the tube to secure metal-to-metal contact of the base of the fin with the tube.
These are used in air heat exchangers, oil coolers, and steam generators. This design helps reduce tube vibration, increasing the overall system’s lifespan and efficiency.