Description: Using green sand casting, resin sand casting or lost foam casting process, SIMIS precision casting Inc. can produce all kinds of cast iron wheel from 4” to 50”. These cast iron wheels are used for transportation, automotive and so on. The material of these cast iron wheels can be grey cast iron or ductile cast iron depending on the client’s requirement. The ductile wheels is model wheels are made of cast ductile iron with almost unbreakable construction for exceptionally heavy-duty service. Ductile iron has a tensile strength. This wheel is meant for the roughest of applications on the poorest of floors.