Pipe skin effect electric tracing (skin electric heating) technology is a new method for heating metal pipelines that has emerged in recent years. It is a new technique and process for heating and insulating thermal输送 pipelines in large-scale oil and petrochemical enterprises, and is简称 abroad as "SECT method." This heating technology is highly efficient, adaptable to the heating and tracing of all long, medium, and short-distance metal fluid transport pipelines, and boasts safety, reliability, and easy installation and maintenance. Therefore, it is widely used in the transportation of pipelines for various types of liquid substances.