Products Description
Our Advantages
1. High Corrosion Resistance
- Compared to ordinary finned tubes, our LL Finned Tube is manufactured using an LL winding process, ensuring a tight bond between the fins and the base tube at the root, preventing crevice corrosion caused by poor contact.
- Our tubes are made of high-quality stainless steel, possessing excellent resistance to oxidation, rust, and chemical corrosion. They have also passed salt spray testing, resisting pitting and crevice corrosion caused by chlorides.
2. High Heat Transfer Efficiency
- Our double-L finned tubes significantly expand the heat exchange surface area, increasing it by 10-20 times compared to bare tubes, thereby improving heat transfer efficiency and reducing energy consumption.
- Our finned tubes are connected using mechanical interlocking and tight winding, reducing the risk of loosening or detachment. Pull-out and torsion tests ensure they will not loosen under vibration or thermal cycling, reducing the risk of operational failure.
3. Easy to Clean
- Our LL Finned Tube base tubes are manufactured using a cold-drawing process, resulting in a smooth surface that does not easily accumulate dust. They are also passivated to reduce dust adhesion.
- Our finned tubes are robust enough to withstand compressed air purging and even high-pressure water washing without damaging the fins.
4. Customization Services
- TORICH offers customization services for tube length, fin height, fin spacing, etc., and can select the appropriate material grade according to customer application requirements. Optional bent or finless sections are available for welding or assembly.
- Surface treatments include polishing, pickling, and anti-corrosion coating; customized packaging and protective measures are provided to prevent fin damage during transportation.
application areas
- HVAC and Refrigeration Systems: Used in heat exchangers, evaporators, and condenser coils; air conditioning and refrigeration equipment, etc.
- Industrial Heat Exchangers: Process cooling and heating in chemical plants; condensers for power plants and manufacturing plants, etc.
- Marine and Offshore Equipment: Seawater condensers, cooling systems, and seawater desalination units, etc.
- Power Plant Cooling Systems: Condensers and cooling circuits for turbines.
- Petrochemicals: Heat exchangers, condensers, corrosive chemical handling, etc.
steel grades
- SUS304TB: General-purpose austenitic stainless steel with excellent corrosion resistance in normal environments, suitable for medium temperatures.
- SUS309TB: High-chromium, high-nickel grade, high-temperature resistant, with excellent mechanical properties under thermal cycling conditions, suitable for high-temperature heat exchangers, furnaces, and superheaters.
- TP316HTB: Excellent corrosion resistance even in chloride-containing environments, suitable for marine and offshore heat exchangers.
- TP347TB: Maintains strength at high temperatures, suitable for boilers and superheaters, chemical processing plants, etc.
Chemical Composition
| Element | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) | Others |
|---|---|---|---|---|---|---|---|---|---|
| SUS304TB | 0.08 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 18–20 | 8–10.5 | – | – |
| SUS309TB | 0.12 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 22–24 | 12–14 | – | – |
| SUS316HTB | 0.08 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 16–18 | 10–14 | 2–3 | – |
| SUS347TB | 0.08 max | 1.0 | 2.0 | 0.045 max | 0.03 max | 17–19 | 9–12 | – | Nb: 10×C–0.7 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| SUS304TB | 515–700 | 205 min | 40 min | 70 max |
| SUS309TB | 515–700 | 205 min | 40 min | 70 max |
| SUS316HTB | 515–700 | 205 min | 40 min | 70 max |
| SUS347TB | 515–700 | 205 min | 40 min | 70 max |
Possible Alternative Grades
| Alternative Grades | Reasons |
| SUS304L / SUS316L | Low-carbon version, suitable for welding-intensive applications. |
| SUS310S | High-temperature resistant material, suitable for furnaces and high-temperature heat exchangers. |
| Alloy 20 | Suitable for corrosive chemical environments or high-temperature applications. |
Products Show


Testing Equipment



Factory Equipment

Pickling equipment


Products Package

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