The alumina tile is a kind of wear-resistant material used in oil, mine, steel plant, power plant and other industries to transport materials or liquid through the pipeline surface. Because there is a gap between the pieces, when it is pasted on the inner wall of the circular pipe, it fits closely with the pipe, without gap, and has better wear resistance, which can effectively extend the service life of the pipe. The main function is to effectively resist the impact of materials on the pipe wall, the corrosion of chemicals and the thermal impact of materials, reduce the wear of equipment components, thus greatly reducing the cost of frequent maintenance and extending the service life of equipment. It is the first choice of industrial wear-resistant, impact resistant and corrosion-resistant materials.