Finned tubes produced using the world's first laser technology are characterized by a continuous weld enhanced with a greater full penetration between the fin root and tube wall without any excess filler metal or unnecessary fin material (e.g. L-foot), with no “cold spot” promoting void between the fin root and pipe and maintains the shape of the fin root. By implementing laser welding technology, the result is a finned tube of extremely high quality along with increased productivity many times over that of typically produced finned tube. Advantages: Greater efficiencies, Lighter, Full penetration, No void between fin root and pipe wall, Distortion-free, Weld control for joining dissimilar metals, Less splatter, Uniform Root Hardness, Excellent strength test #finnedtube, #laserfin, #heatexchangers, #boilers, #whrb, #heattransfer, #heatpipes, #thermosyphons