Products Description
Our Advantages
1. Superior Corrosion Resistance
- We offer premium duplex and super duplex stainless steel materials, exhibiting excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking in chloride-rich seawater and chemical media.
- Each batch of TORICH tubing undergoes rigorous chemical composition testing to ensure that the materials used comply with ASTM A789 specifications.
2. U-Bending Quality
- The U Bend Tubing undergoes stress-relief heat treatment after bending to ensure it will not crack or deform, enhancing its corrosion resistance.
- Our U-tubes are CNC bent to ensure consistent geometry in each U-bend, facilitating heat exchanger assembly.
3. Precise Dimensions
- Our tubing is manufactured using a cold-drawing process, resulting in tight dimensional tolerances and a smooth surface. Mechanical straightening technology ensures the tubes' straightness, preventing any impact on the installation fit with the tube sheet.
- TORICH tubing undergoes rigorous dimensional inspection to ensure complete compliance with customer drawings and heat exchanger design requirements.
4. Surface Quality
- The U Bend Tubing undergoes pickling and passivation treatment, resulting in a smooth surface and a protective chromium oxide layer. This effectively reduces fluid friction and deposit buildup, lowering the risk of pitting corrosion.
- TORICH ensures each batch of formed tubes is free of cracks, delamination, inclusions, and dirt through rigorous surface and non-destructive testing.
5. Customization Services
- TORICH offers a full range of duplex steel grades, providing mechanical or electropolishing and ultra-clean internal surface treatments. Our professional engineering team offers support, including technical drawing review and material selection.
- We can customize outer diameters and wall thicknesses to meet specific project requirements, ensuring your heat exchanger design and operating conditions meet your specific needs.
6. Packaging and Shipping
- Our U-tubes are packaged in wooden crates with grooves to prevent deformation. The tubes are sealed with plastic caps and plastic film to prevent damage or contamination during transport.
- We offer sea, air, and land shipping options. Samples are available, and each package has clear labeling and traceability codes.
application areas
- Oil and Gas Industry: Offshore and onshore heat exchangers for handling high-chlorinated, acidic gases, and high-pressure process streams.
- Petrochemical and Chemical Processing: Heat exchangers, condensers, and reboilers suitable for operation in corrosive chemicals, organic acids, and high-temperature process media.
- Marine and Offshore Engineering: Seawater-cooled heat exchangers, marine coolers, and seawater desalination systems.
- HVAC and Refrigeration Systems: High-precision heat exchangers for industrial refrigeration units and high-efficiency cooling systems.
- Power Generation: Used in boiler waste heat recovery units and cooling systems.
Chemical Composition
| Element | C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| S31803/S32205 | ≤0.03 | ≤2.00 | ≤0.030 | ≤0.020 | ≤1.00 | 21.0–23.0 | 4.5–6.5 | 2.5–3.5 | 0.14–0.20 |
| S32750 | ≤0.03 | ≤1.20 | ≤0.035 | ≤0.020 | ≤0.80 | 24.0–26.0 | 6.0–8.0 | 3.0–5.0 | 0.24–0.32 |
| S32760 | ≤0.03 | ≤1.00 | ≤0.030 | ≤0.010 | ≤1.00 | 24.0–26.0 | 6.0–8.0 | 3.0–4.0 | 0.20–0.30 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB) |
| S31803/S32205 | ≥620 | ≥450 | ≥25 | ≤290 |
| S32750 | ≥795 | ≥550 | ≥25 | ≤310 |
| S32760 | ≥750 | ≥550 | ≥25 | ≤310 |
Possible Alternative Grades
| Alternative Grades | Reasons |
| TP304/304L | Low cost, suitable for general industrial heat exchangers, HVAC systems, and medium- and low-temperature media. |
| Titanium Grade 2 | Lightweight and highly corrosion-resistant, widely used in marine heat exchangers and seawater desalination plants. |
| Inconel 625 | Excellent corrosion resistance and high-temperature strength. Suitable for acidic media, high-temperature chemical plants, and aerospace applications. |
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Testing Equipment



Factory Equipment

Pickling equipment


Products Package

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