Founded in Chicago in 1978, B.W. Supply Company is a foundry and foundry-supply manufacturer now based in Lyons, Ohio. Since purchasing its Lyons foundry in 2002, the company has operated a 51,000-square-foot facility producing grey and ductile iron castings ranging from 1 to 8,000 pounds. It also supplies foundry products to metal casters and smelters across North America.