Nucor is a leading manufacturer, trader and seller of steel and steel products in the US. It is also among North America's largest recyclers of scrap metal and a leading scrap broker. The company produces rolled sheets, bars and beams used in the energy, automotive, transportation and heavy equipment industries. Its other steel products, including steel joists, electrical conduits and metal building systems, are sold to fabricators, distributors and metal manufacturers. Subsidiary Harris Steel fabricates rebar for highways, bridges and other construction projects. The David J. Joseph Company processes and brokers metals, pig iron, hot briquetted iron and direct reduced iron.