black phosphated steel pipe

Advantages:

  • Superior Corrosion Resistance: The black phosphate coating forms a dense protective film, effectively isolating the tube from moisture and corrosive media, outperforming ordinary steel tubes in harsh environments.
  • Reduced Friction: The smooth phosphated surface lowers friction coefficient, facilitating assembly with fittings and ensuring smooth fluid flow—especially critical for hydraulic steel tube in high-pressure transmission.
  • Enhanced Paint Adhesion: The porous structure of the phosphate layer improves compatibility with paints and adhesives, enabling stable secondary surface treatment for customized protection.
  • Maintained Precision: The phosphating process does not affect the original tight dimensional tolerances, preserving the tube’s accuracy for precision assembly requirements.
  • Cost-Effective Protection: Offers reliable corrosion resistance at a lower cost compared to galvanizing, suitable for mass-produced industrial components.

Application:

  • Hydraulic & Pneumatic Systems: As a dedicated hydraulic steel tube, it is used for hydraulic pressure lines, return lines, and pneumatic actuator tubing in construction machinery, industrial equipment, and automation systems, ensuring stable transmission under high pressure.
  • Automotive Industry: Applied in brake lines, clutch lines, and engine hydraulic components, leveraging corrosion resistance and low friction to adapt to vehicle operating environments.
  • Precision Machinery: Serves as guiding tubes, bearing sleeves, and fluid transmission tubes in CNC machines and linear actuators, where dimensional accuracy and wear resistance are essential.
  • Industrial Equipment: Used in hydraulic systems of mining machinery, agricultural equipment, and material handling equipment, withstanding heavy loads and harsh working conditions.
  • Fluid Transfer: Suitable for low-pressure oil, water, and air transfer lines in industrial pipelines, featuring clog-resistant interior and corrosion protection for long-term use.