The stainless steel electric heating tube is made of metal tube, and the spiral electric heating alloy wire (nickel chrome, iron chrome alloy) is uniformly distributed along the center of the tube. The gap is filled with magnesia sand with good insulation and thermal conductivity. Silicon or ceramic seal. The stainless steel electric heating tube is an electrical component that converts electrical energy into heat energy. Because of its high thermal efficiency, convenient use, simple installation and no pollution, it is widely used in various heating occasions and is used in electric heating boilers. Stainless steel electric heating tubes have a long service life and generally have a design life of more than 10,000 hours.