Gas-fired radiant tube heating device is in a sealed casing, burning through the heated surface of the casing is given priority to with thermal radiation in the form of heat transfer to the heated objects, combustion products don't contact with the heated objects, not cause combustion atmosphere pollution or affect the product quality, atmosphere in the furnace and heating temperature easy to control and adjust, very suitable for the high quality requirements of product.Radiant tube heating technology originally from Germany in 1936, with the continuous development of heat resistant material, the continuous improvement of product quality, heat treatment technology advances, such as the United States, Japan and European countries and the indirect heating technology widely applied.In recent decades, the technology of metallurgy, machinery, light industry and other industries in our country also gradually obtained the application.