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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
■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.