Honed Tube/Hydraulic Cylinder Tube/Skived and Roller Burnished Tube

Description

Key Features & Technical Advantages

• Tight Inside Diameter Tolerance: Meets international ISO H8 / H9 tolerances for seamless piston fit.

• Superior Surface Finish: Internal roughness reaches $\text{Ra} \le 0.2\,\mu\text{m}$ (Honed) or $\text{Ra} \le 0.05\,\mu\text{m}$ (SRB), reducing internal friction and seal wear.

• High Tensile & Yield Strength: Available in normalized (+N) or stress-relieved (+SR) heat-treatment conditions to withstand extreme working pressures.

• Excellent Straightness: Controlled within 0.5/1000 mm to ensure smooth, stable stroke operation.

• Quality Guaranteed: 100% Eddy Current and Ultrasonic NDT tested. Supplied with EN 10204 3.1 Mill Test Certificates (MTC).

• Technical Specifications

  • Material Grades: E355, ST52, SAE 1020, SAE 1045, 20#, 45#, 27SiMn

  • Manufacturing Standards: EN 10305-1, DIN 2391, ASTM A519

  • Size Range:

    • Inside Diameter (ID): 40 mm – 300 mm (1.57″ – 11.81″)

    • Wall Thickness (WT): 5 mm – 30 mm

    • Standard Length: 3 m – 9 m or customized cut-to-length

  • End Protections & Packaging: Plastic end caps on both ends, anti-rust oiled internal/external surface, bundled with steel strips and woven bags for safe maritime transit.

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