Products Description
Capillary Stainless Steel Tubes
Advantages of Capillary Stainless Steel Tubes
- Corrosion Resistance: TP304, TP310S, and TP317 offer excellent resistance to the oxidizing, scaling, and corrosive environments common in steam systems, chemical plants, and power plants.
- Clean and Smooth Surface: Our stainless steel capillary tubing is bright annealed or electropolished to minimize contamination, ensuring clean fluid flow and improved resistance to fouling.
- High-Temperature Resistance: TP310S and TP317 grades are specifically designed for high-temperature applications, offering excellent creep strength and thermal stability.
applications of Capillary Stainless Steel Tubes
- Boiler tubes: Used in high-pressure boiler systems in power plants and industrial steam generation.
- Superheater tubes: Used to transport high-temperature steam.
- Heat exchanger tubes: Suitable for shell-and-tube heat exchangers, condensers, and evaporators in the chemical processing, oil and gas, and HVAC industries.
- Instrument and control tubing: Precision tubing for hydraulic and pneumatic systems, control lines, and fluid measurement devices.
- Chemical and petrochemical industries: Corrosion-resistant tubing for transporting process fluids, acids, and gases.
Chemical Composition
| Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Cr (%) | Ni (%) | Mo (%) |
| TP304 | ≤0.08 | ≤2.00 | ≤0.045 | ≤0.030 | ≤0.75 | 18.0–20.0 | 8.0–11.0 | - |
| TP310S | ≤0.08 | ≤2.00 | ≤0.045 | ≤0.030 | ≤1.50 | 24.0–26.0 | 19.0–22.0 | - |
| TP317 | ≤0.08 | ≤2.00 | ≤0.040 | ≤0.030 | ≤0.75 | 18.0–20.0 | 11.0–15.0 | 3.0–4.0 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB) |
| Value | ≥ 515 | ≥ 205 | ≥ 35 | ≤ 192 |
Possible Alternative Grades
If higher corrosion resistance or higher temperature strength is required, possible alternatives include:
- TP316/TP316L: Improved resistance to pitting and crevice corrosion.
- TP321/TP347: Stabilized grades for high-temperature applications.
- Alloy 800/800H/825: Suitable for extreme temperature environments.
- Duplex Steel 2205: Offers higher strength and resistance to chloride stress corrosion.
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