Gerdau S.A., together with its subsidiaries, operates as a steel producer company. The company operates through Brazil Business, North America Business, South America Business, and Special Steel Business segments. It provides semi-finished products, including billets, blooms, and slabs; common long-rolled products, such as rebars, wire rods, merchant bars, light shapes, and profiles to the construction and manufacturing industries; drawn products, including barbed and barbless fence wires, galvanized wires, fences, concrete reinforcing wire mesh, nails, and clamps for manufacturing, construction, and agricultural industries; and special steel products used in auto parts, light and heavy vehicles, and agricultural machinery, as well as in the oil and gas, wind energy, machinery and equipment, mining and rail, and other markets. The company also offers flat products, such as hot-rolled steel coils and heavy plates; and resells flat steel products.