Steel Dynamics, Inc., together with its subsidiaries, operates as a steel producer and metal recycler in the United States. It operates through four segments: Steel Operations, Metals Recycling Operations, Steel Fabrication Operations, and Aluminum Operations. The Steel Operations segment offers hot rolled, cold rolled, and coated steel products; parallel flange beams and channel sections, large unequal leg angles, and reinforcing steel bars, as well as standard strength carbon, intermediate alloy hardness, and premium grade rail products; engineered special-bar-quality products, merchant-bar-quality products, and other engineered round steel bars; channels, angles, flats, merchant rounds, and reinforcing steel bars; and specialty shapes and light structural steel products. This segment also engages in turning, polishing, straightening, chamfering, precision saw-cutting, and heat treating of bar products.