Kowalski Heat Treating Company "Specializing in those PIA(pain in the #$% jobs!" was founded in 1975 by Robert Kowalski. The original 3000sf facility serviced the needs of the tool and die industry in northern Ohio using salt bath technology. Currently KHT encompasses an over 50,000sf facility with salt bath technology, vacuum furnace technology, plasma nitriding and a state of the art metallurgical quality lab. Some of industries KHT services include aerospace, nuclear, automotive, medical, consumer products and petrochemical.