Products Description
Our Advantages
1. Strong Corrosion Resistance
- Our L-Type Fin Tubes are made from high-quality stainless steel, offering excellent corrosion resistance and making them ideal for applications exposed to moisture, chemicals, salt spray, or acidic environments.
- The tubes undergo intergranular corrosion testing and pitting and crevice corrosion testing to ensure no performance degradation under high temperatures or corrosive conditions.
2. High Stability
- Our finned tubes mechanically lock the fins to the tube surface, ensuring long-term adhesion even under high vibration, strong airflow, and mechanical stress.
- The tubes undergo fin bond strength testing to ensure the L-shaped fins are firmly locked and will not loosen due to vibration.
3. Material Control
- Our tubes undergo chemical composition and mechanical property testing to ensure compliance with ASTM A213 standards.
- The tubes undergo solution annealing to enhance the ductility of the fin winding, prevent cracking, and ensure stable performance during temperature cycling of the heat exchanger.
4. Surface Quality
- Our L-Type Fin Tubes undergo pickling and passivation before fin winding, resulting in a smooth surface that ensures a tight and precise winding between the fins and the base tube.
- Our tubes undergo visual surface inspection before packaging to ensure the finned tubes are free of gaps, scratches, edge burrs, or deformation.
5. Customization Services
- Torich finned tubes offer full customization in outer diameter, wall thickness, fin height, spacing, thickness, and fin material grade to match any heat exchanger design.
- Torich provides complete OEM and ODM services for stainless steel L-type finned tubes for heat exchangers, boilers, coolers, condensers, and industrial thermal systems.
application areas
- Power generation and boiler systems: economizers, superheaters, air preheaters, etc.
- Chemical processing equipment: condensers, evaporators, heat exchangers, etc.
- Onshore/offshore oil and gas systems: compressor intercoolers and aftercoolers, offshore platform cooling systems, etc.
- HVAC and air heating systems: air heaters, industrial drying systems, hot air generators, etc.
- Waste heat recovery: waste gas heat recovery, flue gas coolers, etc.
Chemical Composition
| Element | C (%) | Cr (%) | Ni (%) | Mo (%) | Mn (%) | Si (%) | Ti/Nb |
|---|---|---|---|---|---|---|---|
| TP304 | ≤0.08 | 18.0–20.0 | 8.0–11.0 | - | ≤2.0 | ≤0.75 | - |
| TP309H | 0.04–0.10 | 22.0–24.0 | 12.0–15.0 | - | ≤2.0 | ≤1.0 | - |
| TP316H | 0.04–0.10 | 16.0–18.0 | 10.0–14.0 | 2.0–3.0 | ≤2.0 | ≤1.0 | - |
| TP321 | ≤0.08 | 17.0–19.0 | 9.0–12.0 | - | ≤2.0 | ≤0.75 | Ti (5×C to 0.70%) |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB) |
| Requirement | ≥515 | ≥205 | ≥35 | ≤90 |
Possible Alternative Grades
| Alternative Grades | Reasons |
| TP310S | Suitable for extreme high-temperature oxidation environments above 1100℃. |
| TP347H | Niobium-stabilized, with higher high-temperature creep strength compared to TP321. |
| Duplex 2205 | Higher strength, better resistance to pitting/crevice corrosion, suitable for seawater environments. |
| Inconel 600/625 | Suitable for highly corrosive, high-temperature, and extremely corrosive environments. |
Products Show
Testing Equipment
Eddy Current Flaw Detector
Hydraulic Universal Testing Machine
Intergranular Corrosion Tester
Factory Equipment
Pickling equipment
Polishing equipment
Cold drawing equipment
Products Package
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