Gerdau SA engages in the production and commercialization of steel products. It operates through the following segments: Brazil Operation, North America Operation, South Africa Operation, and Special Steels Operation. The Brazil Operation segment includes rebar, bars, shapes, drawn products, billets, blooms, slabs; wire rod, structural shapes, and iron ore. The North America Operation segment consists of rebar, bars, wire rod, and light and heavy structural shapes. The South Africa Operation segment covers rebar, bars, and drawn products. The Special Steels Operation segment comprises of stainless steel, round, square and flat bars, and wire rod. The company was founded by JoÃ£o Gerdau and Hugo Gerdau on January 16, 1901 and is headquartered in Sao Paulo, Brazil.