In the cold northern regions, the temperature can be as low as minus 20-30°C, and the insulation of industrial pipelines alone cannot prevent the fluid in the pipeline from freezing. Fluids tend to expand when they freeze, and when they expand enough, they can cause pipe ruptures. Huanrui pipeline electric heat tracing system realizes heat compensation for the pipeline system, avoiding the rupture of the pipeline due to the freezing and expansion of the fluid.