The FRP slurry spray pipe is usually manufactured by segmentation and sub-assembly during the manufacturing process for easy transportation. When installed on site, the winding and bonding process is used to connect the parts. At present, the connection between the slurry nozzle and the FRP spray pipe is basically changed from the previous flange connection to the winding bonding process.

The winding and bonding process has the advantages of high joint strength, low leakage, simple process, convenient construction and low cost. The specific dimensions of the glass fiber surface felt can be determined based on the actual pressure and diameter. Due to the high thermal expansion rate of FRP, it is required to measure, cut, assemble and bond at the same ambient temperature during construction. Pre-prepared glass fiber reinforced materials, resin mortar, sheet resin, surface resin and contact agent are required.

Wear resistant layer: The part belongs to the outermost structure of the wound layer, and is composed of a glass fiber surface felt, a resin and a wear-resistant filler, and is mainly used for corrosion resistance and wear resistance. The layer of glass fiber surface felt: resin: wear resistant filler: 1:57:38 (mass ratio), thickness of about 0.5 mm.

Anti-corrosion layer: This part is composed of a resin-rich layer and an intermediate layer. It is composed of glass fiber surface felt and resin to form the highest corrosion resistance and is under the wear-resistant layer. The resin-rich layer resin content is greater than 90%, the thickness is about 0.5 mm; the intermediate layer resin content is 70% to 80%, and the thickness is about 2.0 mm.

Reinforcement layer: This part is directly wound on the outer wall of the pipe. It is mainly designed to withstand the load under pressure and other conditions. The resin content of the layer is 30% to 40%, and is composed of glass fiber, chopped fiber mat, and resin.