Metal processing refers to the industry of recycling scrap metal and metal products for reuse by the metal manufacturing industry. When metal products, such as cars, trucks or major appliances, become unusable for their original purpose, these items are often designated as scrap or salvage. This metal is processed in metal processing plants and recycled to create new products.

The Principle of TIG Welding TIG welding is an electric arc welding process in which the fusion energy is produced by an electric arc burning between the workpiece and the tungsten electrode. During the welding process the electrode, the arc and the weld pool are protected against the damaging effects of the atmospheric air by an inert shielding gas.