Rain and sewage diversion transformation, carat tube has become the mainstream material

[Core pipe selection standard for rain and sewage diversion transformation]

In recent years, the national municipal rain and sewage diversion renovation project has continued to advance. As the core carrier of pipe network construction, the performance of drainage pipes directly determines the transformation effect. The selection requirements for rain and sewage diversion materials in the industry are gradually clear: first of all, it is necessary to meet the zero leakage standard to avoid rain and sewage mixed flow or sewage leakage from polluting groundwater and soil; secondly, it is necessary to adapt to the geological conditions of different cities, with sufficient anti-settlement and corrosion resistance; at the same time, it is necessary to take into account construction efficiency and full life cycle cost to reduce the impact of transformation on the normal operation of the city.

[Performance advantages of carat tube suitable for rain and sewage diversion scenarios]

Carat tube is a high-density polyethylene wound structural wall B-shaped pipe, which is currently the core plastic pipe product suitable for rain and sewage diversion scenarios. It adopts hot winding molding process, and the ring stiffness covers the full grade of SN4 to SN16, which can meet the pipe network construction needs of different buried depths and different loads; the interface is connected by electric fusion or hot melt socket, which has excellent sealing performance and can achieve zero leakage at the interface, which fully meets the anti-mixing requirements of rain and sewage diversion; at the same time, the pipe has excellent anti-deformation ability, soft soil foundation and settlement-prone areas are not prone to fracture and damage. The acid and alkali corrosion resistance can guarantee the service life of more than 50 years, greatly reducing the later operation and maintenance costs.

[Construction advantages of carat tubes adapt to the needs of transformation scenarios]

Compared with traditional concrete pipes, the weight of carat pipes is only 1/8 of that of concrete pipes of the same specification, which can be transferred and installed without large lifting equipment, and the construction efficiency can be increased by more than 3 times, which is suitable for the rush demand of most rain and sewage diversion projects. For the transformation scene of the old city, carat pipes can also be adapted to construction processes such as pipe jacking and non-excavation laying. There is no need to break the road surface in a large area, which can greatly reduce the impact of transformation on residents' travel and shop operation, and reduce the dust and noise pollution generated by construction. At present, it has been widely used in rain and sewage diversion reconstruction projects in many places across the country.