Established in 1946, KERR MACHINE CO was a small pump manufacturing facility in Ada, Oklahoma. After many successful years it was moved to Sulphur, Oklahoma and continued to produce legacy pumps while also incorporating innovation to manufacture pumps and high pressure piping components that met the demands of an exploding energy market. As demand increased, so to did KERR's market share and product offerings. KERR MACHINE CO has grown into the largest machining organization in the state of Oklahoma. KERR boasts over 255 machines in a 230,000 sq ft facility with 100% of its parts manufactured in the United States of America! We are proud to serve as a contracting entity for the United States Government!