This Bell Type Furnace is essentially in operation 100% of the time, no more waiting to load or unload. One hearth can be heating while the other hearth is cooling, unloaded or reloaded. 1 cover with 3 base or 1 cover with 2 base Heat element : Electric power( 3Ph, 220V, 380V, 440V), Gas, Oil Temperature : 200 - 1000  Temperature control : PID-Auto Control Temperature recorder : Analog, Hybrid Type Atmospheres Gas : Air, N2, RX, DX, H2+N2 Gas Annealing Nitriding Nonferrous Annealing Bright Annealing Heat Treatment