Products
Finned Tubes
Dolphin engineers high-performance finned tubes designed to maximize heat transfer efficiency across a wide range of industrial applications. From heat exchangers and boilers to air coolers and process systems, our finned tubes are built with precision manufacturing and long-term reliability in mind.
By significantly increasing available surface area for heat exchange, our finned tubes deliver measurable improvements in energy efficiency and reduced operational costs. We offer G-Fin, L-Fin, KL-Fin, and Extruded-Fin configurations, each engineered for specific thermal, mechanical, and environmental conditions.
Our Range
Fin Tube Configurations
G-Fin Tubes
Purpose-built for high-temperature service, G-Fin Tubes deliver superior thermal performance and mechanical strength. A helical groove is precision-machined into the tube surface and the fin is mechanically bonded via a peening process — creating a robust, high-integrity fin-to-tube connection.
L-Fin Tubes
Optimized for moderate temperature applications, L-Fin Tubes are formed by shaping a fin strip into an "L" profile and tension-winding it onto the base tube. The fin foot fully covers the surface between adjacent fins, providing excellent protection against corrosion and external wear.
KL-Fin Tubes
KL-Fin Tubes combine the protective benefits of L-type fins with improved mechanical bonding. The tube surface is knurled before winding, and the fin is embedded into the knurled pattern — significantly increasing contact and resistance to vibration and thermal cycling.
Extruded-Fin Tubes
Engineered for the most demanding environments — high corrosion, high temperature, and aggressive process conditions. A thick aluminum sleeve is mechanically extruded over the base tube, forming integral fins with exceptional bond strength and full protection of the underlying metal. Ideal for offshore, petrochemical, and corrosive gas applications.