Waupaca Foundry has a reputation as solid as the castings we create.
We are the largest producer of gray iron, ductile iron, austempered ductile iron, and compacted graphite iron castings in the world, melting more than 9,500 tons a day. Our castings are produced using custom built, high pressure vertical green sand molding machines created by a workforce that puts generations of iron casting expertise to work for our customers every day.