Founded in 1968, Penna Flame Industries specializes in the flame hardening and roll manufacturing industries. The firm offers roll manufacturing services, including rough turning, finishing, roll grinding, roll polishing, roll refurbishing and repairing of rolls. It also caters with an array of additional services, such as precision surface hardening, cryogenics, tempering, stress relief, straightening and metallurgical testing. Based in Zelienople, Pa., the firm is member of National Association of Manufacturer (NAM) and Metal Treating Institute (MTI).