Continuous Spiral‘L’ Wound Finned Tubes have crimp‘L’ fins, which increases the overall heat transfer surface area. Quicker dissipation and higher heat-transfer coefficient is obtained in equipments fitted with Fin Tubes. Continuous Spirally Crimped‘L’. Fin Tubes are made under high mechanical tension bonding process, in which fin material is helically wound over the tube to get maximum contact of tube & fin and only end of fins are brazedwelded to core tube. Therefore it achieves the highest efficiency and withstands high internal pressure.