By using inert gas

By using fuel gas

By using supportable gas

By using fuel and supportable gas

Through copper nozzle

Through brass nozzle

Through ceramic nozzle

Through metal nozzle

Collet

Adaptor

Ceramic nozzle

Electrode cap

To produce the AC

To change AC to DC

To produce power supply

To initiate the arc without touching the electrode on the base metal

Air cooled

Oil cooled

Gas cooled

Water cooled