Hydraulic steel tubing—also known as honed tubing—serves as a core component in hydraulic systems for conveying high-pressure fluids, and is classified as a type of precision seamless steel tubing produced through cold drawing or cold rolling.
Produced through cold drawing or cold rolling processes—supplemented by treatments such as pickling and phosphating—this product features oxidation-free inner and outer walls, high dimensional precision (with an inner diameter tolerance of 0.02–0.05 mm), and low surface roughness. It is capable of withstanding high pressures and exhibits strong resistance to deformation. As a specialized type of tubing designed specifically for hydraulic cylinders, honed tubing requires integration with a precision-engineered piping layout. During installation, strict control must be exercised over bending radii, contamination prevention measures, and welding procedures to mitigate the risk of oil leakage. Its manufacture necessitates the use of specialized machinery—such as honing machines—while the piping layout must balance structural rigidity with vibration resistance, utilizing support brackets for secure fixation to ensure full compliance with high-pressure piping standards.
Well Mechanical Properties
Tensile strength>600 N/mm² Yield strength>520 N/mm² Elongation>15% Hardness>200HB
Wide-range spec
OD: 40--500 mm ID:25--400 mm Wall thickness: 3--50 mm Length: 30--8000 mm
High precision
Straightness<0.2 mm/1000mm Roughness Ra<0.2 um Tolerance: H8
