With the MIG-MAG method (MIG = Metal-Inert-Gas)/MAG = Metal-Active-Gas) the electric arc burns between the fusing, automatically supplied welding rod (= electrode) and the material. A separately supplied gas protects the arc and welding zone against outside air. The inert gas and welding rod must be matched to the base material.

Weldable materials are: Aluminium, aluminium alloys as well as low, middle and high alloy steel.

MIG/MAG welding is the most popular welding method nowadays on account of the enormous advantages. The high welding speed, minimum reworking and low distortion ensure high efficiency. The great weld seam strength, excellent thin-sheet properties and simple and safe handling with steel, aluminium and stainless steel make the method universally acceptable.