Equipment use: Medium and small-sized enterprises of cold-rolled steel sheet, copper strip width, aluminium heat welding heat with the strengthening, Galvanized steel heat treatment; and the composite And for the steel plates of heat treatment. Once the user selects the automation control gas bell type furnace, user can choose according to their different heat treatment process of material production. Characteristics of the equipment: The gas is used in the wind, saturated steam secondary fully will coal into carbon dioxide gas into the bell type furnace were burning heat. Into the air and water vapor and proportion of coal by PLC system automatically adjusts the control, automatic dregs. Hot gas in the process of heating furnace cover the full use of hydrogen sulphide, reducing tar or equipment corrosion. Hot gas within each activity by the water seal or water valve to control and avoid the high temperature coal gas equipment damage. In the hot gas automatic adjusting valve adopts the special design, don't touch on ash corrosive, thus make the heating temperature on the cover of long-term production process and the adjustment and control.