A metal tubular electric heater element (industrial heating tube) is an electric heating element placed in a metal tube. The crystalline magnesium oxide powder having good heat resistance, thermal conductivity and insulation is closely packed in the void portion, and is processed by other processes. The utility model has the advantages of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, simple installation and long service life. Widely used in a variety of saltpeter tanks, water tanks, oil tanks, acid and alkali tanks, fusible metal melting furnaces, air heating furnaces, drying furnaces, drying ovens, hot stamping and other devices. Industrial heating pipe is an electrical component that converts electrical energy into heat energy. Because of its low price, convenient use, convenient installation and no pollution, it is widely used in various heating occasions. At present, there are many manufacturers of electric heating components, and the brand of electric heating pipe. There are also many, the life of the electric heating tube is very long, the general design life is more than 10,000 hours.