Founded in 1945, Great Lakes Castings (GLC) Great Lakes Castings is a green sand foundry producing ferrous castings for a wide range of industrial customers. They produce gray iron castings ranging in weight from 0.5 to 50 pounds and ranging in volume from low-moderate to high. Industries served include: construction, valve, pump, agricultural, gas, automotive, HVAC, fire protection, and many others.

GLC is proud to have earned ISO/TS16949 certification and IATF 16949:2016 certification. To keep pace with customer requirements, they complement traditional casting processes by applying new, advanced technologies.