UNICON SYSTEM CO., LTD.
This Certificate of Appointment was awarded to LAI KOK FAI as the ibrahim sultan polytechnic industry advisory committee for the period from October 2023 until September 2025.
| Specification of High Frequency Welded (HFW) Finned Tube | |
|---|---|
| Tube/Pipe Material | Carbon Steel, Stainless Steel, Copper, Inconel, Titanium |
| Fin Material | Carbon Steel, Stainless Steel, Copper, Aluminum |
| Tube/Pipe OD | 8.0mm ~ 219.1mm |
| Fin Type | Solid and Serrated |
| Fin Height | 5.0mm – 20mm( 50% of tube OD, up to 80% in special request) |
| Fin Thickness | 0.4mm ~ 3.0mm |
| Fin per Meter (FPM) | Max. 520 fin (based 0.4t fin) |
| Tube Length | Max. 27,000 mm |
| Application | – Oil & Gas: ACHE(Air cooled), HVAC, Economizer, Heat exchanger, Air Preheater, Fired Heater – Power plant: HRSG, Nuclear, GGH(Desulfurization) |
| Advantage of High Frequency Welded(HFW) Finned Tube vs Embedded Fin (G type) & Extrude Type | |
|---|---|
| Weldability | High Frequency Welded (HFW) can be applied dissimilar tube and fin welds instead of G-Type and Extrude Type |
| Efficiency | Higher heat exchange efficiency, 10% higher than G-Type, 15% higher than Extruded |
| Cost Save for Material | Tube material cost saving, 10% for G-type (0.3mm Groove), Much less for Extruded Type |
| Flexible Fin Pitch | Smaller and lighter equipment |
| Tube Size and Quantity | Minimum 10% reduce tube size and quantity |
| Higher Temperature | Applied to higher temperature depend on design temperature |
| Strong Durability & Maintenance | Strong durability with welded fin, Easy handling and waterjet washed. |
| Macro-Picture of Fin Connection Details | |
|---|---|
High Frequency Welded (HFW) Fin |
Embedded Fin (G type) 
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S&S VALVE CO., LTD.
SAMSHIN LIMITED CO., LTD.