The main features are as follows:
1. Safe and non-toxic: the plastic pipe is made of vinyl resin which can reach the sanitary level of drinking water transportation. It is suitable for large-diameter long-distance gravity gravity self-flow cleaning of water supply pipes, and will not cause secondary pollution to the transportation medium.
2. Good fluidity: the Manning number of HDPE double-wall steel-plastic composite drainage pipe is the same as that of other structural wall plastic pipes, that is, 0.01; The Manning number of cement pipe is 0.0 13, so the conveying capacity of HDPE double-wall composite drainage pipe is 30% higher than that of cement pipe under the same caliber and using conditions.
3. Long service life: Under normal use, the service life of HDPE double flat-wall steel-plastic composite drainage pipe can reach 50- 100 years, which is much longer than that of cement pipe or metal drainage pipe, especially under relatively harsh use conditions, its service life may vary from 10 to several 10 years.
4. The comprehensive cost of the project is low: for large-diameter pipelines, considering the saving of manufacturing cost, transportation and installation cost, the comprehensive cost of the double-flat wall steel-plastic composite drainage pipeline project is lower than that of other pipelines except cement pipes. Compared with cement pipes, plastic pipes with the same caliber can transport more media flow (about 15%), so the comprehensive cost of double-flat wall steel-plastic composite drainage pipes is lower.
5. Environmental protection: The double flat-wall steel-plastic composite drainage pipe is environmentally friendly in the process of manufacture, use and recycling. First, there is no waste water, waste gas and waste material in the manufacturing process, which has no pollution to the environment; However, the production process of cement materials needed for manufacturing cement pipes and the manufacturing process of cement pipes themselves have seriously polluted the environment and become the key targets of environmental protection departments. Secondly, waste plastic pipes can be recycled. Only carbon dioxide and water vapor are produced during combustion, and no other harmful gases are discharged.
6. No leakage: advanced structure, even and firm connection of slats, and good sealing of pipe sections.
7. Uniform wall thickness and consistent performance: Because the wall thickness is uniform (not corrugated) and there are no weak links, the performance of the wall is uniform.
8. Convenient installation: Because of the double-flat structure of the inner and outer walls, the pipes and the inspection wells are connected by sockets, which makes the installation convenient and quick.
9. The pipeline is suitable for trenchless construction: due to the double-wall structure of the pipe wall, the actual tensile strength of the welded joint of the pipe wall is twice the inspection value. Therefore, HDPE double flat wall steel-plastic composite drainage pipe has both rigidity and flexibility. After extremely bad destructive tests, it is proved that HDPE double flat wall steel-plastic composite drainage pipe can resist harsh environment, ground settlement and trenchless construction.