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Hard Chrome hydraulic rod for medical bed gas spring
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Hard Chrome hydraulic rod for medical bed gas spring

Diameter Range of Chrome Hydraulic Rod: Ø6-30mm

Maximum Length: 1000mm

Material: High-strength steel (C45,C35,304/316/316L stainless steel)

Surface Treatment: QPQ (Quench-Polish-Quench)

Surface Hardness: HRC 40-45

Surface Roughness: Ra ≤ 0.2μm

Salt Spray Test: 120+ hours

Application: Chrome hydraulic rods are used for car trunk and honnet, gas spring, damper, hardware toolbox, medical beds, office chairs, study tables

Certifications: ISO 9001,SGS tested

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  • QPQ piston rod
  • QPQ piston rod
Product Information
  • Technical parameters

    TypeModelMaterialDiameter(mm)Length(mm)RoughnessHardnessSurface Treatment
    chrome hydraulic rodHZ029steel 45Φ10197Ra<0.2μmHRC40-45QPQ 120Hours

    Hard chrome hydraulic rod utilizing a advanced QPQ (Quench-Polish-Quench) surface treatment technology, this rod replaces traditional chrome plating with an environmentally friendly process that achieves superior surface performance, including high hardness, minimal roughness, and outstanding corrosion protection.



    Features of Chrome Hydraulic Rod

    Exceptional Corrosion Resistance

    The QPQ process forms a dense nitride layer (typically 10–20 μm for carbon steels) and an oxidation layer, providing ≥120 hours of salt spray resistance without rust—significantly outperforming conventional blackening or phosphating treatments.

    High Wear Resistance & Low Friction

    The surface hardness of HRC 40–45 (equivalent to HV 400–500) ensures excellent resistance to abrasion, while the ultra-smooth finish (Ra ≤ 0.2 μm) reduces friction during reciprocating motion, enhancing seal longevity and operational smoothness.

    Minimal Distortion & Consistent Quality

    QPQ treatment is performed below the phase transformation temperature of steel, eliminating structural stress and maintaining tight straightness (≤0.2 mm/m). This chrome hydraulic rod suitable for precision assemblies where dimensional stability is critical.

    Environmentally Friendly Alternative

    Unlike traditional chrome plating, which generates toxic hexavalent chromium waste, QPQ uses non-toxic cyanate-based salts and produces no hazardous wastewater, aligning with green manufacturing standards.



    Hard Chrome Hydraulic RodApplications

    Automotive: Ideal for trunk lifts, hood supports, and tailgate applications.

    Furniture: hard chrome hydraulic rods commonly used in office chairs and adjustable tables for smooth height adjustment.

    Industrial Equipment: Essential in machinery requiring reliable and consistent motion.


    Quality Assurance OF Chrome Hydraulic Rod

    All rods undergo 100% inspection for dimensions, hardness, and surface quality.

    Certifications include ISO 9001 for quality management and SGS test reports validating material composition and performance.

    Custom packaging (e.g., anti-rust oil + paper sleeves) ensures damage-free transit.


    Why Choose our chrome hydraulic rod?

    Quality Assurance: Our chrome hydraulic rods undergo rigorous testing to meet international quality standards.

    Custom Solutions: We offer customization options to meet specific requirements for your projects.

    Fast Delivery: We pride ourselves on timely shipping and efficient order processing.

    Expert Support: Our team of experts is available to assist with any inquiries or technical questions.



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