The surface load of the electric heating pipe has a direct relationship with the life of the electric heating pipe. In different environments of use and different heating media, different surface loads should be used when designing the heating elements. Application electric heating tube material and surface load (power density) watt / square centimeter application example 10-20# stainless steel copper tube aluminum tube static air heating is not applicable to showers, water heaters, etc. soft water is not applicable, not suitable for advanced kitchen water, etc. The principle of electric heating element Tubular heating element is a kind of heating magnesium oxide powder which is placed in a metal tube and is closely filled with crystalline magnesium oxide powder with good heat resistance, thermal conductivity and insulation in the surrounding space, and then processed by other processes. . What is the service life of the electric heating tube? The electric heating tube may have problems. It has the characteristics of simple structure, high mechanical strength, high thermal efficiency, safety and reliability, convenient installation and long service life.