Products Description
Our Advantages
1. Material Control
The Stainless Steel Hydraulic Cylinder Tube is made of high-quality duplex stainless steel. Each batch undergoes spectrometer analysis and metallographic testing after heating, conforming to ASTM A789 standards.
2. Strong Corrosion Resistance
Our tubes undergo complete solution heat treatment to dissolve harmful substances and are manufactured using a cold drawing process, resulting in seamless tubes with no welding corrosion risk.
3. Surface Quality
Our Stainless Steel Hydraulic Cylinder Tubes are pickled and passivated to enhance corrosion resistance. The inner surface is honed to a roughness average (Ra) of ≤ 0.4 μm, and the outer surface is polished.
4. Dimensional Advantages
Our honed tubes have an outer diameter of up to 600mm and support customized sizing. Every tube produced by TORICH undergoes strict dimensional control, with inner diameter tolerances controlled to H7-H11 after honing.
5. High Strength
Our tubes are seamless tubes manufactured using a cold drawing process, ensuring uniform wall thickness. They undergo rigorous mechanical property testing and non-destructive testing to ensure high strength, suitable for high-pressure applications.
6. Quality Control
Every tube produced by TORICH is traceable from raw materials to finished product. Comprehensive chemical, mechanical, heat treatment, non-destructive testing, and dimensional inspections are documented in EN 10204 3.1/3.2 certificates, ensuring compliance with ASTM A789 standards and customer requirements.
application areas
- Hydraulic Cylinder Barrels and Liners: Suitable for large-diameter hydraulic cylinders in construction, mining, and industrial machinery.
- Marine and Offshore Hydraulic Systems: Suitable for hydraulic actuators in ships, platforms, and offshore drilling rigs.
- Oil and Gas High-Pressure Pipelines: Used in drilling rig hydraulic systems, subsea actuators, etc.
- Heavy Machinery and Construction Equipment: Hydraulic cylinders in excavators, cranes, loaders, and presses.
- Mining and Chemical Hydraulic Systems: Used in hydraulic presses, conveyors, and chemical processing equipment.
- Aerospace: Used in aircraft hydraulic actuators.
manufacturing process
Chemical Composition
| Element | C | Mn | P | S | Si | Cr | Ni | Mo | N | Cu |
|---|---|---|---|---|---|---|---|---|---|---|
| S32202 | ≤0.03 | 2.00 | 0.04 | 0.01 | 1.00 | 22.0 | 5.5 | 3.0 | 0.14–0.20 | - |
| S32205 | ≤0.03 | 2.00 | 0.03 | 0.02 | 1.00 | 22.0 | 5.5 | 3.0 | 0.14–0.20 | - |
| S32304 | ≤0.03 | 2.50 | 0.04 | 0.04 | 1.00 | 23.0 | 4.5 | 3.0 | 0.14–0.20 | 0.05-0.60 |
| S32506 | ≤0.03 | 1.00 | 0.04 | 0.015 | 0.09 | 25.0 | 7.0 | 4.0 | 0.25 | - |
Mechanical Properties
| Property | Tensile Strength | Yield Strength | Elongation | Hardness |
| S32202 | ≥ 450 MPa | 620–800 MPa | ≥25% | ≤290 HB |
| S32205 | ≥ 450 MPa | 620–820 MPa | ≥25% | ≤290 HB |
| S32304 | ≥ 450 MPa | 650–850 MPa | ≥25% | ≤300 HB |
| S32506 | ≥ 550 MPa | 800–950 MPa | ≥20% | ≤320 HB |
Possible Alternative Grades
| Alternative Grades | Reasons |
| TP316L / TP317L | Suitable for moderately corrosive environments, with lower strength than duplex stainless steel, but widely applicable and cost-effective. |
| 254SMO | Offers extremely high corrosion resistance in chloride-rich and chemical environments; strength is similar to super duplex stainless steel. |
| 304L | Suitable for less corrosive environments and medium-pressure hydraulic applications, and is cost-effective. |
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
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