The fluidized bed boiler falling coal pipe is usually made of wear-resistant. Because the coal particles fall from a high place, the coal powder particles are transported by the coal-conveying wind, the flow rate is high, the pipe wall is continuously washed, the pipe wall wears through, resulting in leakage of powder, etc. problem. Our company adopts a special process, which is integrally casted with silicon carbide in the pipeline, once formed, will not fall off, no weak links, wear-resisting and erosion-resistant. Reduce the wear and corrosion of airflow, dust and particulate materials on the inner wall of equipment and pipelines, improve the service life of equipment and pipelines, and its service life is 2-3 times that of wear-resistant steel piping, which reduces the maintenance of users and has good safety. Sex and reliability. Our company can produce various types of silicon carbide lining coal mining pipes according to customer's drawing requirements.