Detroit Edge Tool Company (DETCO) is a leading supplier of machine ways & rails, shear knives, surface grinding, large cnc machining, machine knives, flame hardening, wear plates & liners to industries globally.Flame Hardening State of the art Flame Hardening and Straightening equipment ensures more accurate Heat Treating processing. Case Hardening of carbon and alloy grade steels along with close tolerance straightening capabilities, enables DETCO to stand alone as your "one-stop shop" in the heat treating industry.