At first, carbon electrodes were used in carbon arc welding.

An AC supply is recommended for twin carbon arc welding.

The electrodes employed for twin carbon arc welding are approximately of the same diameter as the workpiece thickness.

Gas carbon arc welding (CAW-G) no longer has commercial significance.

Air carbon arc welding is common in industries that work with stainless steels, cast iron, or ordinary carbon steel.

Introducing a method of carbon arc welding, they also became the "inventors of modern welding apparatus".

Nikolay Benardos developed carbon arc welding, obtaining patents from 1887 showing a rudimentary electrode holder.

In 1881-82 a Russian inventor Nikolai Benardos created the first electric arc welding method known as carbon arc welding, using carbon electrodes.

Other arc welding processes include atomic hydrogen welding, carbon arc welding, electroslag welding, electrogas welding, and stud arc welding.

Carbon arc welding (CAW) is a process which produces coalescence of metals by heating them with an arc between a nonconsumable carbon (graphite) electrode and the work-piece.

Unlike single carbon arc welding, in twin carbon arc welding the arc is maintained between two carbon electrodes held in a special holder.

Twin carbon arc welding, though more complex than single carbon arc welding, possesses the advantage that arc is independent of the job and can be moved anywhere without getting extinguished.