Radiation tube is widely used in heating furnace, is the main heating element of heating furnace. The radiation tubes used are mainly divided into two categories: gas radiation tubes and electric heating radiation tubes. The thermal efficiency of gas radiant tube is about twice as high as that of electric radiant tube. Therefore, gas radiant tube is the development trend of radiant tube in the future. Under the condition of modern market economy, the competition of radiation tube enterprises is more and more fierce. However, technological innovation is very difficult.