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 products including ductile iron pipe and fittings, fire hydrants, cast iron soil pipe and fittings, and related products. McWane also manufactures fire extinguishers, fire suppression systems, and steel pressure vessels. The company has 25 foundries and manufacturing plants in the United States, Canada, Australia, and China.