United States Steel Corp operates in the United States but also has a steelmaking capacity in Slovakia. The company's operating segments include North American Flat-Rolled (Flat-Rolled), Mini Mill, U. S. Steel Europe (USSE), and Tubular Products (Tubular). The Flat-Rolled segment includes U. S. Steel's integrated steel plants and equity investees in North America involved in the production of slabs, strip mill plates, sheets, and tin mill products, as well as all iron ore and coke production facilities in the United States. It serves North American customers in the service center, conversion, transportation, construction, container, and appliance, and electrical markets.