Superior Corrosion Protection for Bundy Tubes

PVF Coating

PVF (Polyvinyl Fluoride) coated Bundy tubes has been adopted by auto make like Volkswagen, Mazda, Nissan, Kia, Hyundai, and many others.

PVF coating on the Bundy tubes typically looks deep green and nearly black. It has very good corrosion resistance.

In the manufacture process, the tubes shall be firstly electro-plated with zinc , chromated to enhance the zinc plating performance, and then coated with a layer of PVF to finally isolate the metal from outside environment.

Item Requirement
Process Electroplated Zinc, Trivalent Chromate, PVF Coating
Zinc Thickness 8μm, 13μm, 25μm
PVF Thickness Average 20μm, 8μm min
Salt Spray Test White Rust: 240hr to 480 hr

Red Rust: 3000hr to 6000 hr

4.75 PVF Coated Brake Line Tube

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