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    Surface Treatment

    On automotive parts, usually rust preventive surface treatment is applied. Zinc based plating or nickel based plating is often used since they have very reliable performance among various treatment methods. Inside and/or outside surface(s) of USUI made tubes are treated, according to the applications, by proprietary zinc based or nickel based plating.

    Standard tube outside surface treatment
    (Hexavalent chromate free)

    Zn+Trivalent Chromate

    Applications
    General purpose
    Zn+Trivalent Chromate

    Zn/Ni+Trivalent Chromate

    Features
    Heat resistant & corrosion resistant
    Applications
    For Tubing in engine room
    Zn/Ni+Trivalent Chromate

    HI-TIN-Z®

    Features
    Heat resistant & high corrosion resistant
    (Salt damage countermeasure)
    Applications
    For Tubing in engine room
    For Power steering tubing
    HI-TIN-Z®(Zn+Sn/Zn+Zn+Trivalent Chromate)

    ZINIC®

    Features
    Heat resistant & high corrosion resistant
    (Salt damage countermeasure)
    Applications
    For Tubing in engine room
    For Power steering tubing
    ZINIC®(Ni+Zn/Ni+Trivalent Chromate)

    NEW SUPER COAT

    Features
    High corrosion resistant
    Applications
    For Brake tubing
    For Fuel tubing
    For Tubes both ends press forming required
    NEW SUPER COAT(Zn+Trivalent Chromate+Primer+PVF)

    PC TUBE

    Features
    High corrosion resistant & anti-chipping resistant
    Applications
    For Brake tubing
    For Fuel tubing
    For Tubes both ends press forming required
    PC TUBE(Zn+Trivalent Chromate+Primer+PVF+PP)

    ULLT®

    Features
    High corrosion resistant & anti-chipping resistant
    Applications
    For Brake tubing
    For Fuel tubing
    For Tubes both ends press forming required
    ULLT®(Zn+Trivalent Chromate+Primer+PA+PP)

    Tube inside surface treatment

    Only for Single Walled Steel Tubing(Hycolin®)

    Nickel Plating

    Features
    Prevention of copper elution. To be used with Ethanol blended gasoline and sour gasoline
    Applications
    For Fuel tubing

    HINIC® (Double Layer Nickel)

    Features
    Improved corrosion resistant. To be used with Ethanol blended gasoline and sour gasoline
    Applications
    For Fuel, air, and water tubing
    â– Cautionary Note
    The information shown on this page is intended to describe typical characteristics and performance that our products might possess; but not to grant any warranty in any form.
    Please be aware, depending on use purposes, use environments and use conditions, the generic information may not be applicable in certain cases.
    USUI may also modify or delete any of the products information without advance notice. For the latest or further information, please contact us.