Campbell Foundry Company engineers, designs and manufactures a wide range of castings, both ferrous and non-ferrous. Campbell has served the construction industry for more than 80 years. Campbell s construction castings are manufactured from gray iron and ductile iron. Ductile iron offers the high-tensile strength of steel and the corrosion-resistant properties of gray iron. The company operates two foundries in Harrison, N.J., and Emporia, Va.