United States Steel Corporation produces steel products. It operates through three segments: Flat-rolled Products, U. S. Steel Europe, and Tubular Products. The Flat-rolled Products segment produces slabs, sheets, tin mill products, strip mill plates, rounds, and coke. It serves customers in the service center, conversion, transportation, construction, container, and appliance and electrical markets in North America. The U.S. Steel Europe segment manufactures and sells sheet, strip mill plate, tin mill, and tubular products, as well as heating radiators and refractories. It serves customers in the central, western, and southern European construction, service center, conversion, container, transportation, and appliance and electrical, as well as oil, gas, and petrochemical markets. The Tubular products segment produces and sells seamless and welded tubular products for the oil, gas, and petrochemical markets. United States Steel Corporation also involves in the production and sale of iron ore pellets, as well as the provision of transportation services. In addition, it owns, develops, and manages various real estate assets, which include approximately 200,000 acres of surface rights primarily in Alabama, Maryland, Michigan, Minnesota, and Pennsylvania; participates in joint ventures that develop real estate projects in Alabama, Illinois, and Maryland; and owns approximately 4,000 acres of land in Ontario, Canada. Further, the company provides engineering and consulting services, which include the preparation of studies, mine and process audits, basic and detailed engineering, project and construction management, procurement, start-up and commissioning, and training and operations assistance to the mining and mineral processing sectors. United States Steel Corporation was founded in 1901 and is headquartered in Pittsburgh, Pennsylvania.