Radiant tube is an important equipment in industrial furnace, and it is widely used. For example, it is needed in the heating process of continuous annealing furnace of galvanized unit, and it must ensure good performance. Once leakage occurs, it will bring great consequences to the production and operation of unit, and even affect the normal operation of production.

    Furnace heating of steel strip continuous strip annealing furnace heating reduction period is generally gas combustion in the radiant tube heating radiant tube, through thermal radiant heating strip and radiant tube furnace wall and thermal radiant heating strip again after the strip steel lattice organization change and eliminate the internal stress of steel strip, the strip plasticity of the restoration, to improve the performance of strip steel, so as to achieve the purpose of annealing.