Laser welding puts a precise amount of energy exactly where the fin meets the tube. The heat-affected zone stays narrow, so the base tube does not distort and the corrosion resistance of stainless steel is preserved.
This makes laser welded fin tubes suitable for thin-wall stainless and duplex tubes, with fin thickness down to 0.3 mm. The weld is a true metallurgical joint, so thermal contact resistance is very low and the fin will not loosen in service.
Typical applications: stainless steel air coolers, food and pharmaceutical dryers, chemical process gas coolers, marine and offshore exchangers, and any duty where a welded fin is required on a thin-wall tube.
Base tubes: stainless 304/316L/321, duplex, carbon steel, alloy steel. Fin materials: stainless steel, carbon steel, copper or aluminium. Tell us the tube size, fin height and pitch, materials and quantity for a quotation.
Related: Laser Welded Finned Tube · High Frequency Welded Fin Production · Integral Fin Rolling