表面处理工艺
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/Ni+Trivalent Chromate
Features
Heat resistant & corrosion resistant
Applications
For Tubing in engine room
HI-TIN-Z
Features
Heat resistant & high corrosion resistant
(Salt damage countermeasure)Applications
For Tubing in engine room
For Power steering tubing
ZINIC
Features
Heat resistant & high corrosion resistant
(Salt damage countermeasure)Applications
For Tubing in engine room
For Power steering tubing
NEW SUPER COAT
Features
High corrosion resistant
Applications
For Brake tubing
For Fuel tubing
For Tubes both ends press forming required
PC TUBE
Features
High corrosion resistant & anti-chipping resistant
Applications
For Brake tubing
For Fuel tubing
For Tubes both ends press forming required
ULLT
Features
High corrosion resistant & anti-chipping resistant
Applications
For Brake tubing
For Fuel tubing
For Tubes both ends press forming required
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
