McWane, Inc. is one of the world's largest manufacturers of iron water works and plumbing products and one of America's largest privately owned companies. The company manufactures a host of different products including ductile iron pipe and fittings, cast iron soil pipe and fittings, heavy duty couplings, utility poles, network switches and monitoring equipment, and related products. McWane is also a manufacturer of pressurized cylinders for the storage of propane and other gases through its Manchester Tank and Equipment Company division, and fire protection systems and extinguishers through its Amerex subsidiary.