Nucor Corporation, through its subsidiaries, engages in the manufacture and sale of steel and steel related products in the United States. It operates in two segments, Steel Mills and Steel Products. The Steel Mills segment offers hot-rolled steel products, such as angles, rounds, flats, channels, rebar, sheets, wide-flange beams, pilings, billets, blooms, beam blanks, and plates; and cold-rolled steel. The Steel Products segment manufactures steel joists and joist girders, steel deck, cold fini ...