Founded in 1929, Sharon Tube is a domestic steel-tubing manufacturer and a member of Zekelman Industries. It makes precision Drawn Over Mandrel (DOM) and Electric Resistance Welded (ERW) tubing at facilities in Farrell, Pennsylvania, and Niles, Ohio. The company describes its Farrell operation as a 250,000-square-foot DOM factory and its Niles plant as an ERW manufacturing facility.