| Sr. | Particulars | Range |
|---|---|---|
| 1 | Base Tube Material | Stainless Steel, Carbon Steel, Alloy Steel, Titanium, Copper, Duplex Stainless Steel, Inconel, etc. (all materials in theoretical limit) |
| 2 | Base Tube Outside Diameter | 25.40mm to 50.00mm (1” NB pipe to 2” NB pipe) |
| 3 | Base Tube Thickness | 2.50mm and above |
| 4 | Base Tube Length | 500mm Min to 15000mm |
| 5 | Fin Material | Carbon Steel, Alloy Steel, Stainless steel, etc. |
| 6 | Fin Type | Solid or Serrated |
| 7 | Fin Thickness | 0.80mm to 2.50mm |
| 8 | Fin Density | 79 FPM (2 FPI) to 276 FPM (7 FPI) |
| 9 | Fin Height | 9.8mm to 25.00mm |
| 10 | Bare Ends | As per Clients Requirements |
| 11 | Manufacturing Capacity | 4,80,000 meters per Annum |
The fins are manufactured by spirally winding and continuously welding the fin around the base tube and pipe. During the winding the fin is continuously welded giving the most robust bond between the fin and the tube.
This type of Fin Tube is used specifically where application involves a lot of mechanical stress like continues vibrations etc.
The welding bond between the tube and the fin also ensures that almost perfect heat transfer efficiency is achieved. It can also give the highest operating temperature ranges. This fin tubes find application in HRSG, AIR PRE-HEATERS, WASTE HEAT RECOVERY SYSTEMS, BOILER FIN TUBES etc. and are used in industries like power plants, chemical industries, steel plants, chiller plants, petroleum refiners etc.
Properties of WELDED/CONTINUOUSLY WELDED SPIRAL FIN TUBE
| Manufacturing Process | Continuously welded spiral – solid and serrated. |
|---|---|
| Fin to tube Bond | Excellent |
| Heat Transfer Efficiency | Excellent |
| Mechanical Resistance | Excellent (Hence can be frequently cleaned with high pressure jets unlike other fin tubes, thereby reducing downtime and increasing overall life.) |
| Corrosion Protection | Depending on properties of material of Fin and pipe. |
| Temperature Range | Depending on properties of material of Fin and pipe. |