Profile: Lamberts Tool & Welding Supplies Ltd. supplies products such as MMA inverters, TIG inverters, MIG welders, pipe purging and gas equipment. Gas tungsten arc welding (GTAW) is an arc welding process that uses a non-consumable tungsten electrode to produce the weld. It is most commonly used to weld thin sections of stainless steel and light metals such as aluminum, magnesium, and copper alloys. The process grants greater control over the weld, than competing procedures such as shielded metal arc welding and gas metal arc welding, allowing for excellent finish, yielding highly cosmetic welds that are stronger.