Donsco Incorporated, a leader in iron castings since 1906, is North America's premier single-source provider of machined gray and ductile iron components. Our Central Pennsylvania foundries feature advanced green sand molding with both vertical and horizontal lines, producing castings up to 150 lbs. In-house CNC machining, patternmaking, and trusted partnerships for heat treatment and coating deliver fully integrated solutions - or raw castings when preferred. Exceptional quality, short lead times, and reliable supply chain support. (less)