GTAW, or Gas Tungsten Arc Welding, is a welding process that uses a non-consumable tungsten electrode to produce the weld. An inert gas, typically argon or helium, shields the weld area from contamination. This method is known for its precision and ability to weld thin materials, making it popular in industries like aerospace and automotive. The GTAW process can be used on various metals, including aluminum, stainless steel, and copper. It requires a skilled operator to control the heat and filler material, ensuring high-quality welds. Due to its versatility, GTAW is often chosen for applications where strong, clean welds are essential.