Ampco-Pittsburgh Corporation operates its businesses in two segments: Forged and Cast Engineered Products, and Air and Liquid Processing. Forged and Cast Engineered Products segment consists of Union Electric Steel Corporation (Union Electric Steel or UES) and Union Electric Steel UK Limited (UES-UK). Union Electric Steel produces ingot and forged products that service a variety of industries globally. Air and Liquid Processing segment includes Aerofin, Buffalo Air Handling and Buffalo Pumps, all divisions of Air & Liquid Systems Corporation (Air and Liquid), a wholly owned subsidiary of the Company. Aerofin produces custom-engineered finned tube heat exchange coils and related heat transfer products. Buffalo Air Handling produces custom air handling systems used in commercial, institutional and industrial buildings. Buffalo Pumps manufactures a line of centrifugal pumps for the refrigeration, power generation and marine defense industries.