Sheet metal processing is known as sheet metal work. Specifically, it involves using sheet metal to fabricate chimneys, iron drums, oil tanks and jugs, ventilation pipes, elbows, reducers, circular-rectangular shapes, funnel shapes, and more. The main processes include cutting, bending, flanging, forming, welding, and riveting, and it requires a certain level of geometric knowledge. Sheet metal parts are thin metal hardware pieces that can be processed through stamping, bending, stretching, etc., and are generally defined as components that maintain constant thickness during the manufacturing process. They are contrasted with castings, forgings, and machined parts, etc.