In the field of engineering machinery, extreme pressure, severe vibration, abrasive environments, and long-cycle operating conditions are frequently encountered, thus requiring stainless steel tubing with high strength, fatigue resistance, and stable performance. TORICH manufactures precision hydraulic steel tubing, honed cylinder tubing, high-pressure seamless tubing, and capillary tubes to meet a wide range of customer application needs.
Our tubing is manufactured with tight dimensional tolerances, excellent roundness, and defect-free inner surfaces, ensuring reliable hydraulic seals and smooth piston movement. Advanced cold drawing, honing, and heat treatment processes enhance mechanical properties, achieving excellent wear resistance and a longer service life even under high load and high-frequency operating conditions.
Customer Challenge
- Extremely high pressure and continuous vibration can cause pipe deformation, fatigue cracking, and potential hydraulic leaks, jeopardizing system reliability.
- Abrasive particles, dirt, slurry, and harsh operating environments accelerate surface wear, corrosion, and material degradation, shortening the service life of standard pipes.
- High requirements for precision and dimensional stability necessitate pipes with tight tolerances, smooth inner surfaces, and stable performance to ensure accurate hydraulic control and long-term operational stability.
Solution
Material Control
TORICH maintains stringent quality control over its materials, offering high-performance stainless steel, duplex stainless steel, nickel-based alloys, and chromium-molybdenum alloy steels designed for demanding engineering machinery applications. These materials exhibit excellent high-temperature strength, corrosion resistance, and resilience against repeated impacts. All tubing undergoes mechanical property testing, chemical composition analysis, and high-pressure certification to ensure reliable performance in hydraulic, structural, and heavy-duty applications.
Precision Manufacturing
TORICH tubing is manufactured using a precision cold-drawing process, ensuring uniform wall thickness, strict dimensional tolerances, and a smooth, defect-free surface. For hydraulic cylinder applications, we further employ advanced honing and rolling processes to achieve an inner surface roughness Ra ≤ 0.2–0.4 µm, thereby guaranteeing excellent sealing and low-friction performance. Automated measurement and inspection systems continuously monitor critical dimensions to ensure consistency and accuracy in every tube we deliver.
Surface Protection
Engineering machinery typically operates in environments filled with dust, mud, moisture, chemicals, and abrasive media. To ensure their long-term durability, TORICH offers a range of surface treatment processes for various steels. For stainless steel, we offer pickling and passivation, electropolishing, and specialized protective coatings. For chromium-molybdenum steel, we offer processes such as phosphating, nitriding/carbonitrification, and blackening. These surface protection measures enhance corrosion resistance, reduce wear, and maintain stable performance even under extreme pressure, continuous vibration, and long-term outdoor exposure.
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