Founded in 1917, St. Marys Foundry is a St. Marys, Ohio manufacturer known for taking on highly engineered castings that challenge many foundries. Its quality system remains ISO compliant, and the company’s work includes gray and ductile iron castings for industrial applications.
ISO 9002 Quality Certification
ISO Compliant
Compliance program
OSCO Industries, IncSince its 1872 beginnings as the Ohio Stove Company, Portsmouth-based OSCO Industries has grown into a three-plant foundry manufacturer of gray-iron castings. Its South-Central Ohio operations specialize in medium- to high-volume parts weighing under 50 pounds, with production spanning green-sand and shell molding. The company’s roots in stove making give its modern casting work a distinctive 150-year history.PORTSMOUTH, OH
Sawbrook Steel Casting, LLCIncorporated in 1923, Sawbrook Steel Casting is a Cincinnati foundry with a long industrial history that included wartime work for the U.S. Navy. Today, its 100,000-square-foot operation makes carbon and low-alloy steel castings for demanding applications, with production ranging from 1 pound to 12,500 pounds. The company is ISO 9001:2015 certified.CINCINNATI, OH
Quaker City CastingsFamily-owned Quaker City Castings has been making American-made castings in Salem, Ohio, since 1932. The foundry is known for applying no-bake molding to demanding industrial parts, with in-house machining supporting customers that need finished components rather than raw castings. It is ISO 9001:2015 certified, ABS approved, and recognized as a HUBZone-certified small business.SALEM, OH
MPS MankatoSince 1876, MPS Mankato has operated a Mankato foundry producing ductile iron castings and helping manufacturers convert costly fabrications into cast parts. The facility produces 120 tons of ductile iron daily for more than 150 customers, with engineering, in-line machining, and coordinated finishing kept close to the casting operation. Its quality system has been registered to ISO standards since 1996 and is currently certified to ISO 9001:2015.WASHINGTON, WV