TIG (tungsten inert gas) welding, also known as GTAW (gas tungsten arc welding) or Heliarc welding, creates clean welds on a range of materials without generating spatter, sparks, smoke, or fumes. It offers more control over the quality of the weld than other welding processes and is ideal for welding surfaces that will be visible. TIG welding equipment is well suited for welding thin pieces of alloy steel, stainless steel, and nonferrous metals. It is commonly used for welding vehicles, pressure vessels, pipelines, food industry containers, and aviation equipment. A TIG welding machine, TIG torch, and tungsten electrode are used to form an electrical arc for creating welds on a workpiece. Rod-shaped filler metals can be fed into the molten workpiece material to build up the weld. Nozzles, collets, and other accessories help position the electrode, deliver shielding gas to the weld pool to keep out contaminants, and support the welding process.