Seminole Tubular Products is a leading manufacturer of quality steel pipe fittings and steel electrical-tubular conduit fittings. The company supplies pipe nipples, hardware and pre-cut pipe, couplings and fittings. Seminole serves customers from its corporate headquarters and manufacturing facility in Cambridge, Ohio, manufacturing and sales in Houston, Texas, and Chicago, Ill. It is a division of John Maneely Company and sister to Wheatland Tube Company, a leading manufacturer of welded steel pipe and electrical conduit. Seminole was founded in 1974.