??RH vacuum heater is special equipment for temperature-rising of RH vacuum heater, which can be divided into the preheater used for the heating & heating preserving for the inside lining of the RH vacuum heater and the drier in maintenance area applied for the inside lining heating of the RH vacuum heater after inside lining exchange. The company can provide the design and production service for packaged equipment and satisfy the required heating condition for all sorts of tonnage RH vacuum heater.