Heat treatment is the production of wear resistant steel, ship hull steel, pressure vessel steel products such as an important means of heat treatment furnace is an important equipment in industrial production, compared with other industrial furnace, can accurate, timely control the temperature, ensure the quality of plate heat treatment.With the application of radiant tube in the heat treatment furnace has a great advantage.1) high productivity.Radiant tube can make the steel plate after charging can in the shortest possible time to reach the temperature of the technological requirements, maximize the furnace productivity, improve production efficiency.