United States Steel Corporation is a leading producer and distributor of flat-rolled and tubular steel products across North America and Europe, operating through Mini Mill, USSE, Tubular, and North American Flat-Rolled (Flat-Rolled) segments. The segments offer slabs, strip mill plates, sheets, tin mill products, electrical products, and iron ore and coke, to serve customers in automotive, construction, container, electrical, and service center markets. The company also engages in real estate business and was founded in 1901, headquartered in Pittsburgh, Pennsylvania.