Profile: United-County Industries Corp. provides heat treat services. Our services include neutral hardening, carburizing, carbo-nitriding, vacuum hardening, nitriding, straightening & aging, flame hardening, precipitation hardening, stress relieving, brazing and carbon restoration. Our nitriding furnaces are able to process parts up to 115 inches long and 38 inches in diameter including stainless steel. We are accredited with ISO 9001:2000 certification.