The carat pipe product is an environmentally safe product with light weight, strong pressure bearing capacity, high interface quality, long life, corrosion resistance, high ring stiffness, convenient construction, etc. It is widely used in urban water supply, drainage, and long-distance transportation. Water and farmland irrigation projects. The diameter of the pipe is from DN300 to DN4000, the pipe is light in weight, and the overall flexibility is good. It is currently the main pipe of choice for buried sewage and drainage.