The ASTM has five standards covering Ductile Iron castings. ASTM A536 is the most frequently used, covering the general engineering grades of Ductile Iron. The other standards cover austenitic and special Ductile Iron applications.

Clearfield produces Ductile Iron castings up to 18,000 pounds in various configurations from basic bars and rings, to highly cored volutes cylinders, and impellers. We work with wooden, Styrofoam or metal patterns either supplied by customers, or built by our own pattern shop. Clearfield specializes in Ductile Iron castings for single prototypes to lower volume production runs. We also have value added processes such as machining, painting, and assembly.