LEADING THE WAY™ MacLean Power Systems is a leading manufacturer of ductile iron castings to various markets, including agriculture, electrical, construction, heavy truck, railroad, oil & gas, and industrial. Our capabilities include in-house tooling, machining, painting, heat treatment, and galvanizing. MacLean Power Systems supplies the industry with the shortest lead times, award-winning engineering, and a dedicated account team. If you are tired of unstable suppliers and inconsistent quality, it's time to experience the "MPS Difference. (less)