PVF Coated Steel Brake/Fuel Line Tubing

PVF (Polyvinyl Fluoride) coated steel Bundy tubing has been adopted for brake lines, transmission cooler lines and power steering hard tubes by auto make like Volkswagen, Mazda, Nissan, Kia, Hyundai, and many others.

PVF coated brake line tube typically looks dark 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.

ProcessElectroplated Zinc, Trivalent Chromate, PVF Coating
Zinc Thickness8μm, 13μm, 25μm
PVF ThicknessAverage 20μm, 8μm min
Salt Spray TestWhite Rust: 240hr to 480 hr

Red Rust: 3000hr to 6000 hr

4.75 PVF Coated Brake Line Tube