Welded Finned Tubes in Type L, KL, LL, G Embedded, Extruded

Finned Tubes are helically wound and continuously welded to the tube by high frequency electric resistance welding of solid or serrated steel fins. This produces a homogeneous, clean and continuous fin-to-tube bond with no additional weld material, for a very efficient heat flow and resistance to corrosion.

This manufacturing process is carried out under strict standards. We also supply finned tubes with intermediate plain portions where required.

The use of high-frequency current results in extremely localized heating of the tube surface and the edge of the fin. This skin effect produces higher weld speeds, hence post-weld heat treatment is not considered necessary because of the superficial nature of the changes in the microstructure.