How Are Brake Lines Made

Brake lines made for automotive use are manufactured from soft-steel sheets, coated with copper, and rolled over into a double-wall tube. They are then bonded at a high temperature and tin-plated to resist corrosion. The two common brake line diameter sizes are 3/16″ and 1/4″.

How is brake tubing made?

By rolling steel sheets of copper coated double sides 720 degrees into a two layer pipe, heating it to melt the copper, and cooling it, the two layer steel sheet is “welded” into a round section tube. Its mechanical properties is quite idea to flare and bend, ensuring a safe burst pressure level also.

What is brake line tubing made of?

The passenger vehicle industry has historically used their standard of steel tubing, which is made by rolling a copper-coated steel strip and furnace brazing it along the seam. When completed the steel tubing is double walled for extra strength.