Finned Tube




Fin tubes are used wherever electric power is generated or raw materials are refined and where efficient cooling is required. Fin tubes are needed in a constantly increasing quantity for the production of heat exchangers, condensers, coolers and furnaces. The great increase of the thermal efficiency when applying fin tubes allows a substantial reduction in site and costs of such cooling equipment. The surface of such tubes is substantially increased and consequently less tubes are required compared with exchangers with plain tubes.
Other types of Finned Tubes: Square fins, Oval Fins, Extruded serrated finned tubes, Serrated Fins, Longitudinal Channel Fin, etc.
High Frequency Welded Finned Tube
Uses of welded finned tubes
The main uses for high frequency welded finned tubes are in the heat recovery associated with boilers for power generation and in furnace applications for the various processing industry.
Manufacturing Process
GME supplies the highest quality welded finned tubing to any part of the world for use in oil refineries, petrochemical plants, power generating stations, fertilizer and gas production plants. The newly designed manufacturing facility, with our high frequency resistance welding machines, enables us to perform large scale projects in reduced times.
The steel fin (solid or serrated) is helically wound and continuously welded to the tube by high frequency electric resistance welding. 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.
The welding process enables the combination of any grades for studs and tube: carbon, alloy, stainless steels and high nickel alloys. Alloy steel pipes are stress-relieved after studding, according to the relevant specifications for the class and grade of steel used.
Sizes and materials
Our high frequency welding finning machines are capable of handling tube diameters from 21 mm o/d to 273 mm o/d and tube lengths of up to 26 meters. Fin sizes range from 6 mm to 38 mm high and from 0.8 mm to 3 mm thick.
Tube O.D: 3/4″ to 10″ |
Tube Thickness: upon request |
Tube Length: upon request |
Tube material: Carbon steel / Alloy steel / Stainless steel / nickel / high nickel alloy / nickel copper / nickel – chrome – iron / copper alloy /etc. |
FIN Height: 6mm to 38mm |
FIN Thickness: 0.8mm to 3mm |
FIN Pitch: 3mm to 25mm or 1 to 7 fins/inch |
FIN Type: Plain/solid or serrated |
FIN Material: Carbon steel / stainless steel / high nickel alloy / etc. |




Studded Tube
Uses of Studded Tubes
Steel studded tubes are used instead of finned tubes for heat transfer in the processing industries, generally in furnaces, gas turbines, fired heaters and furnace applictions where the surface is exposed to a very corrosive environment and where very dirty gas streams require frequent or aggressive cleaning
Welding Process
The steel studs are automatically resistance welded to the tube, producing high quality forge welds. Our automatic studding machines are capable of handling tube diameters from 1″ TO 8″ o/d and standard stud diameter of 12.7mm.
The welding process enables the combination of any grades for studs and tube: carbon, alloy, stainless steels and high nickel alloys. Alloy steel pipes are stress-relieved after studding, according to the relevant specifications for the class and grade of steel used.
Tube O.D. : 1″ to 8″ |
Tube Thickness: On request, depend on fin thickness and tube O.D. |
Tube Length: Upon request |
Tube material: Carbon steel / Alloy / Stainless Steel / Nickel / High nickel alloy / Nickel copper / nickel – chrome – iron / copper alloy |
STUD height: 25mm to 38mm |
STUD diameter: 12,7mm to 18mm |
STUD Pitch: 16mm (5/8″) = 63 studs rows per meter |
STUD Type: Cylindrical, Elliptical, or Lens type |
STUD material: carbon steel / stainless steel / alloy steel or others |





