Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) welding or metal active gas (MAG) welding, is a semi-automatic or automatic arc welding process. We also said that carbon dioxide /CO2 gas shielded welding (call co2 welding for short), is using carbon dioxide /CO2 gas which discharged from nozzle to isloate air, then protect the weld pool.

Suitable for welding such metals as low carbon steel, stainless steel and aluminium.

Widely apply to such trades as shipbuilding, metal structure, pipeline engineering, pressure container and vehicle making.