AK Steel Holding Corporation is a producer of flat-rolled carbon, stainless and electrical steels and tubular products through its wholly owned subsidiary, AK Steel Corporation (AK Steel). AK Holding's operations consist of seven steelmaking and finishing plants located in Indiana, Kentucky, Ohio and Pennsylvania that produce flat-rolled carbon steels, including coated, cold-rolled and hot-rolled products, and specialty stainless and electrical steels that are sold in hot band, and sheet and strip form. Its operations also include AK Tube LLC (AK Tube), a wholly owned subsidiary of the Company, which further finishes flat-rolled carbon and stainless steel at two tube plants, one located in Ohio and one located in Indiana, into welded steel tubing used in the automotive, large truck and construction markets.