Single source supplier of cast iron parts for industry. Through its different divisions, Donsco has the capability to supply: ... Prototypes CNC tooling Gray and ductile iron castings from 1 to 250 pounds Specialty alloys such as Ni-Hard, Ni-Resist, and High Silicon Molybdenum Short-run replacement parts High-volume production parts Machining, painting, sub-assembly Assembly, boxing, distribution read more