Gas metal arc welding (GMAW), sometimes referred to by its subtypes metal inert gas (MIG) welding or metal active gas (MAG) welding, is a welding process in which an electric arc forms between a consumable wire electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to melt, and join. APSL provides a wide range of MIG / MAG welding equipment ranging from 250A to 600A. The MAGNUS series is simple, powerful, robust and made for in house as well as site applications. MIG/MAG welding facilitates Higher welding speeds, Greater deposition rates, Less post welding cleaning (e.g. no slag to chip off weld) and better weld pool visibility.