L-Foot Finned Tubes are used in heat exchangers that do not exceed 400 degrees, primarily for air-cooled applications such as large radiators and large compressor oil coolers. The tubes consist of thin aluminium fin strips wound helically around the tube circumference, with materials such as carbon steel, stainless steel, or brass. A foot (1/16" wide) is first formed on one side of the fin strip, which is then wound tightly around the tube with the front bearing on the outer surface. The fin spacing is typically 10 fins per inch of tube length, though this can be varied. The tension in the fin strip as it is wrapped around the tube serves to hold the fin firmly in place.

LL-Fin Tube is manufactured in the same way as the "L" finned tube type, except that the fin foot is overlapped to completely enclose the base tube, thereby giving excellent corrosion resistance. This type of finned tube is often used as an alternative to the more expensive extruded type fin in corrosive environments.

KL-Fin Tube is manufactured exactly as the 'L' finned tube, except that the base tube is knurled before the fin foot is applied. After application, the fin foot is knurled into the corresponding knurling on the base tube, which enhances the bond between the fin and tube, resulting in improved heat transfer characteristics.

G-Fin Tube is an aluminum fin-stripped tube, which is wound into a machined groove and securely locked into place by backfilling with base tube material. This ensures that maximum heat transfer is maintained at high tube metal temperatures.

Extruded Fin Tube is formed from a bi-metallic tube consisting of an aluminum outer tube and an inner tube of almost any material. The fin is formed by rolling material from the outside of the exterior tube, giving an integral fin with excellent heat transfer properties and longevity. Extruded fin also offers excellent corrosion protection of the base tube.

RMK's low-finned tubes are manufactured to meet the demanding requirements of various industries, as evidenced by their successful implementation by leading clients worldwide. These tubes are widely used in shell and tube heat exchangers across multiple sectors, including oil and gas production, LNG and LPG plants, oil refineries, and petrochemical and chemical processing. Low-Finned Tubes offer a number of key advantages, such as increased surface area, enhanced heat exchange efficiency, improved overall performance of existing exchangers, and the ability to create compact heat exchangers from larger shells.

The High Frequency Fin Tube provides an enhanced heat transfer surface, optimizing performance in heat exchange applications that involve the transfer of hot exhaust gas to liquid processes. Its solid design makes it suitable for a wide range of applications, including Heat Recovery Steam Generators, Petrochemical plants, Economizers, and Gas coolers. The Solid Fin Tube is ideal for gas streams with high levels of contamination, while the Serrated Fin Tube is specifically designed for clean gas streams.