SP Foundry, located in South Coffeyville, OK, is one of two foundry facilities within the Star Pipe Products family. SP Foundry is a diversified manufacturer providing casting, machining, assembly and production of customized cast iron and ductile iron products.

Working within the Star Pipe Products family, SP Foundry is able to meet our customers import needs through our overseas facility, SP Foundry Global.

SP Foundry is dedicated to creating manufacturing partnerships with their clients and strive to be a world class provider of manufacturing services.

Company History

1919 – The Jensen Company was founded by 4 brothers (William Jensen, K.R. Jensen, Elmer Jensen, and Steve Jensen in Nowata, Oklahoma. Jensen began as a manufacturer of oil field pumping units
1926 – Due to expanding operations and lack of space, the company began moving to Coffeyville, KS.
1937 – Due to an interest in Aviation by the two remaining brothers, William & K.R., the Jensen Airport was built in South Coffeyville, Oklahoma
1941 – Jensen’s partnered with Howard and Joe Funk by purchasing the assets of the Funk Aircraft Company and relocated it from Akron, OH, to South Coffeyville, Ok. Roughly 365 Funk airplanes were built by 1948. Today, roughly 150 are still registered, 60 still airworthy. Funk fly-in still a yearly event
1949 – At their peak, Jensen produced 6000 oil field pumping units
1954 – A fire destroyed the South Coffeyville aircraft plant
1974 – Ground is broken to construct Jencast in South Coffeyville, OK (Same site utilized today)
1982 – To diversify the foundry’s capabilities, the “jobbing” strategy was put in place.
2002 – The GS-West mold line is installed to replace a much smaller production air-set line to service larger casting requirements
2010 – To meet growing demands, furnaces at Jencast upgraded to 3-phase melting
2015 – Machine shop expansion to include multi-spindle drills to accommodate growing ductile iron pipe fitting production needs
2016 – Added cement lining operation to provide finished, painted ductile iron pipe fittings
2016 – Star Pipe Products purchases Jensen International, Inc. and changes the name to SP Foundry.
2016 – NSF and UL certifications obtained
2018 – Groundbreaking on SP Foundry Expansion
2018 – EMI line installed
2019 – DISA 270B installed
2020 – Completed SP Foundry Build and Consolidation to single campus in S. Coffeyville