Sheffield Steel is a mini-mill producer of SBQ and MBQ hot-rolled bar products, concrete reinforcing bar and fabricated products, including fabricated rebar, steel fence posts and railroad track spikes. The company's headquarters and largest manufacturing facility is located in Sand Springs, Oklahoma, where it has an annual billet making capacity of 650,000 tons. It also has a rolling mill in Joliet, Illinois, two fabrication shops in the Kansas City area, and a railroad spike producer in Sand Springs, Oklahoma. Sheffield also owns the Sand Springs Railway, which connects the Sand Springs industrial corridor to Tulsa, Oklahoma.
