Steel pipe extenally heated electrothermal membrane heater

The utility model discloses a steel pipe external heating type electric heating film heater, and relates to a heating device applied in industry, agriculture and family life. The heating device comprises a steel pipe external heating type metal oxide electric heating film heating pipe 2, a central control system 5, an alternating current contactor 3 and an inductor, etc.; the heater adopts the steel pipe external heating type metal oxide electric heating film heating pipe to heat, a heating element centripetally heats, the heating speed is rapid, and the heat loss is small; the heater adopts the hydroelectric separation when the electric energy is converted into the heat energy, the steel pipe surface adopts the high insulation, and the heater is safe and reliable. Because a national standard seamless steel pipe is adopted as a carrier, the electric heating film technology is used for making various heaters under normal pressure, and also make a steam oven, a high temperature heat-transfer oil furnace, and various industrial heating products, etc.; the heater is suitable for standardization production and modular combination; the heater with no pollution, anticorrosion, and oxidation resistance is suitable for various severe environments.