Nucor Corp manufactures steel and steel products. The company's reportable segments are steel mills, steel products, and raw materials. The majority of its revenue is derived from the steel mills segment, which is engaged in producing sheet steel (hot-rolled, cold-rolled, and galvanized), plate steel, structural steel (wide-flange beams, beam blanks, H-piling, and sheet piling), and bar steel products. Nucor manufactures steel principally from scrap steel and scrap steel substitutes using electric arc furnaces (EAFs), along with continuous casting and automated rolling mills. The steel mills segment sells its products mainly to steel service centers, fabricators, and manufacturers located in the United States, Canada, and Mexico.