Nucor Corporation is an American producer of steel and related products headquartered in Charlotte, North Carolina. It is the largest steel producer in the United States. Nucor is North America's largest recycler of any material; it recycled 16.9 million tons of scrap in 2015. It was founded in 1940.
In 2016, the company produced and sold approximately 22 million tons of steel. Nucor operates 23 scrap-based steel production mills.
Nucor produces steel bars (carbon and alloy steel), beams, sheet / flat rolled steel, plate, steel joists, joist girders, steel deck, fabricated concrete reinforcing steel, cold finished steel, steel fasteners, metal building systems, light gauge steel framing, steel grating, expanded metal, and wire mesh.
In addition, through its David J. Joseph Company subsidiary, Nucor also brokers ferrous and nonferrous metals, pig iron and HRI/DRI; supplies ferro-alloys; and processes ferrous and nonferrous scrap.
According to en.wikipedia