The steel processing industry converts crude steel or steel materials (such as steel coils, steel plates, and bars/wire rods) into metal components or finished products required by downstream industries (including construction, machinery, automotive, and home appliances) through processes such as cutting, stamping, bending, welding, and surface coating.

In Taiwan, the industry is mainly composed of small- and medium-sized steel processors, characterized by technology-intensive operations and a strong emphasis on customization and one-stop services (such as cutting, slitting, and roll forming).