Gelan multi-material welded finned tubes are engineered for air-cooled heat exchangers, delivering high heat transfer efficiency and reliable performance in high-temperature and corrosive environments.
By welding fins directly to the tube surface, our finned tubes provide improved durability, stronger thermal contact, and extended service life compared with conventional designs.
Gelan finned tubes are designed with direct welded fins, allowing flexible combinations of tube and fin materials to meet diverse process requirements.
● Welded fin-to-tube interface for direct heat transfer
● Wide range of fin heights, thicknesses, and spacings
● Tube outer diameter range: 9 mm – 60 mm
● Minimal fin deformation even at elevated temperatures
● Mutilple materials choices like aluminum, copper, carbon steel, stainless steel, titanium-aluminum alloy, etc.
|
Pipe
Fin fins
|
Aluminum | Copper | Carbon Steel | Alloy | Stainless Steel | Nickel-Based Alloy | Aluminum |
|---|---|---|---|---|---|---|---|
| Minimum thickness: 0.45 Maximum thickness: 1.1 |
Minimum thickness: 0.45 Maximum thickness: 2.0 |
Minimum thickness: 0.45 Maximum thickness: 2.0 |
Minimum thickness: 0.45 Maximum thickness: 2.0 |
Minimum thickness: 0.45 Maximum thickness: 2.0 |
Minimum thickness: 0.45 Maximum thickness: 2.0 |
Minimum thickness: 0.45 Maximum thickness: 2.0 |
|
| Aluminum | OK | OK | — | — | — | — | — |
| Copper | OK | OK | — | — | — | — | — |
| Carbon Steel | OK | OK | OK | OK | OK | — | — |
| Alloy | OK | OK | OK | OK | OK | — | — |
| Stainless Steel | OK | OK | OK | OK | OK | — | — |
| Nickel-Based | OK | OK | OK | OK | OK | OK | OK |
| Alloy Titanium | OK | OK | OK | OK | OK | OK | OK |
* Select materials accroding to customer needs.
* The thickness of the fins can be changed.
|
Pipe
Fin fins
|
Aluminum | Copper | Carbon Steel | Alloy | Stainless Steel | Nickel-Based Alloy | Aluminum |
|---|---|---|---|---|---|---|---|
| Aluminum | 250 | — | — | — | — | — | — |
| Copper | 400 | 600 | — | — | — | — | — |
| Carbon Steel | 400 | 600 | 500 | 500 | 500 | — | — |
| Alloy | 400 | 600 | 650 | 650 | 650 | — | — |
| Stainless Steel | 400 | 600 | 650 | 650 | 850 | — | — |
| Nickel-Based | 400 | 600 | 650 | 650 | 900 | 900 | 900 |
| Alloy Titanium | 400 | 600 | 600 | 600 | 600 | 600 | 600 |
● Direct welding eliminates thermal resistance between fin and tube
● Significantly improved heat transfer compared to mechanically bonded fins
● Large selection of fin spacings, heights, and thicknesses
● Extensive tube diameter range enables precise process matching
● Minimal deformation at elevated temperatures
● Strong fin attachment resists vibration and thermal cycling
● No lubricants used during production
● No post-cleaning process required
● High production efficiency with competitive cost performance
● Air Fin Coolers (ALU AFC)
● Air-Cooled Heat Exchangers
● Petrochemical and refinery cooling systems
● Chemical and specialty chemical processes
● High-temperature and corrosive service environments
They are particularly suitable for large-volume air-side heat transfer applications where efficiency and durability are critical.
Gelan uses ASME-certified pressure-part manufacturing, strict quality control, and high-temperature alloys sourced from trusted mills. Every heater is thermally optimized to maintain stable performance under continuous duty.
Yes. All fired heaters and process furnace types—including Reformers, Cracking Furnaces, and Hydrogen Furnaces—are fully customizable. We tailor burner layout, coil design, fuel mix (gas/oil), and heat duty to match your exact project specifications.
We apply advanced thermal simulation, low-NOx burner options, and optimized convection sections to reduce fuel consumption. Many clients achieve 3–8% fuel savings after upgrading to a Gelan system.
Gelan supplies systems for:
● Oil refineries
● Petrochemical plants
● Hydrogen plants
● Gas processing units
● Specialty chemical producers
Contact Gelan to receive a material-optimized finned tube solution tailored to your process, temperature, and environment.
