An important reason why pe fittings were not developed in the early stage is due to their uneconomical nature. However, after the development of special materials for high-performance polyethylene pipes, special materials for PE water supply pipes have been greatly developed in recent years. Enhance the use advantages of pe pipe fittings, and expand the application field of pe pipes. The pe pipe is not corroded, and the material of the pe pipe fittings is non-toxic. It does not scale and can effectively improve the water quality of the pipe network; pe pipes have good water hammer pressure resistance, and the fusion joints and pe pipe fittings integrated with the pipe have the effective resistance to underground movement and end load, which greatly improves the safety and reliability of the water supply sex.

The pe pipe has low damage and maintenance costs. The pe pipe has good flexibility and weldability, making it more convenient, economical, safer and more reliable when laying. The laying speed of pe pipe is fast. As long as the joint is good, the axial load can be accepted without leakage and disconnection. Therefore, there is no need for expensive anchor points and piers at the joints and bends during laying, and the cost can be reduced. The pe pipe has unique flexibility, its elongation at break exceeds 500%, the bending radius can reach 2025 times the pipe diameter, and it has excellent scratch resistance. Therefore, it is easy to move, bend and penetrate during laying, and is suitable for various construction methods such as trenchless pipe jacking. Moreover, the pe pipe has strong adaptability to the pipeline foundation. On the one hand, the requirements for the pipe foundation are reduced, and on the other hand, the pipe foundation changes after laying, and it is not easy to be damaged.