Large-diameter drainage project, comparative interpretation of commonly used plastic pipes in Xiaogan

Large-diameter drainage plastic pipes are the core main materials used in various drainage projects in Xiaogan area, accounting for more than 60%. The current commonly used categories mainly include double-wall corrugated pipes, solid-wall drainage pipes, and wound structural wall pipes. Compared with traditional concrete drainage pipes, such pipes have smooth inner walls, lighter weight, and lower transportation and installation difficulties. They are the mainstream selection products in the field of drainage engineering in recent years. In order to ensure the adaptability of the project, most local projects in Xiaogan will conduct a comprehensive comparison of the parameters, costs, and adaptability of different types of plastic pipes before launching, and screen products that meet the needs of the project.

In terms of the core selling point, the first is that the parameter adaptability can be selected on demand. There are clear differences in the ring stiffness and water flux parameters of different types of large-diameter drainage plastic pipes: the ring stiffness grade of double-wall corrugated pipes covers 4kN/m2 to 16kN/m2, and the external pressure resistance is strong, which is suitable for municipal road sections with large buried depths; the roughness of the inner wall of the solid-wall drainage pipe is only 0.009, and the water flux is about 15% higher than that of the corrugated pipes of the same specification, which is suitable for high-flow drainage needs; the ring stiffness stability of the wound structural wall pipe is stronger, which is suitable for soft soil sections with high settlement risk. In Xiaogan area, the rainfall is concentrated in the rainy season and the short-term rainfall is large. The corresponding parameters can be matched according to the drainage bearing capacity, buried depth and geological conditions of the project.

The second is that the comprehensive construction cost is controllable. The weight of large-diameter plastic pipes is only 1/8 to 1/5 of that of concrete pipes of the same specification, and the transfer and installation can be completed without large lifting equipment. The interface is connected by hot melt connection or elastic sealing ring, and the sealing compliance rate exceeds 98%. The construction efficiency is increased by more than 30% compared with traditional pipes, which can shorten the construction window period of local road drainage projects in Xiaogan and reduce the impact on public transportation. The unit cost difference of different types of pipes is between 10% and 25%, which can match the project needs of different budgets.

The third is the strong local climate adaptability. Xiaogan belongs to the subtropical monsoon climate, with an extreme maximum temperature of close to 40 ° C in summer and a minimum temperature of minus 5 ° C in winter. Commonly used large-diameter drainage plastic pipes can withstand temperatures from -10 ° C to 60 ° C, and have strong acid and alkali corrosion resistance. Buried laying does not require additional anti-corrosion treatment. Under normal use conditions, the service life can reach more than 50 years. If the project involves open-air laying needs, you can choose to add anti-aging modifiers to ensure long-term use stability.

The fourth is the low cost of long-term operation and maintenance. The inner wall of large-diameter plastic pipes is not easy to adhere to dirt, and the annual water flow attenuation rate is less than 0.1%, so there is no need to carry out regular dredging and grinding operations. The repair difficulty of different types of pipes is low. Partial damage of corrugated pipes can be quickly repaired by special repair parts, and solid-wall pipes can be repaired by hot melt mending, all of which do not require large-scale excavation operations, which can reduce the long-term operation and maintenance investment of Xiaogan's local drainage pipe network.

Applicable scenarios cover municipal road drainage pipe network construction, urban residential area rain and sewage diversion renovation, industrial park sewage pipe network laying, farmland water conservancy and drainage channel construction and other projects within Xiaogan City. Suitable groups include municipal engineering contractors, real estate development enterprises, industrial park operation and maintenance managers, farmland water conservancy project construction units, etc.

The current large-diameter drainage plastic pipes used in Xiaogan area must comply with the national "Technical Regulations for Buried Plastic Drainage Pipeline Engineering" and the requirements of local drainage engineering construction standards in Hubei Province. Before the product enters the market, it is necessary to provide core parameter testing reports such as ring stiffness, corrosion resistance, and water flow issued by a third-party authoritative testing agency. All parameters can be put into use after meeting the standards, which can fully guarantee the construction quality of drainage projects. (The full text is about 980 words)