Surface treatment "Outer surface treatment of the tube, inner surface treatment of the tube"

Zinc-based and nickel-based rust prevention treatments developed independently are applied according to various uses.

Reliable zinc-based and nickel-based coatings are widely applied for rust prevention treatments of automotive components. However, the inner and outer surfaces of tubes manufactured by Usui International Industry Co., Ltd. are treated with uniquely developed zinc-based and nickel-based rust prevention treatments tailored for various applications. The inner surface treatment of the tubes is applicable only to single-layer rolled steel pipes. 【Features of Inner Surface Treatment of Tubes】 ○ Nickel → Prevents copper leaching, suitable for alcohol fuel and sour gasoline countermeasures. ○ HINIC (Multi-layer Ni) → Improved corrosion resistance, suitable for alcohol fuel and sour gasoline countermeasures. For more details, please contact us or download the catalog.

basic information

**Features of Tube Outer Surface Treatment** ○ Zinc, Nickel + Trivalent Chromate → Heat resistance, corrosion resistance ○ HI-TIN-Z → Heat resistance, high corrosion resistance (for salt damage prevention) ○ ZINIC → Heat resistance, high corrosion resistance (for salt damage prevention) ○ New Super Coat → High corrosion resistance ○ PC Tube → High corrosion resistance, stone impact resistance ○ ULLT → High corrosion resistance, stone impact resistance ● For more details, please contact us or download the catalog.