FRP slurry spray pipe is used in the flue gas desulphurization project. In the process of manufacturing, it is easy to transport. It is usually made of segments and parts, and each part is connected by winding and bonding process. At present, the connection between slurry nozzle and glass fiber reinforced plastic (FRP) spray pipe is basically changed from the former flange connection to the connecting process by winding and bonding process. The winding adhesive process has the advantages of high connection strength, no leakage, simple technology, convenient construction and low cost.