Construction material selection of local MPP pipe project in Wuhan

MPP pipe, also known as modified polypropylene pipe, is a new type of pipe commonly used in the field of electric power and pipe network construction. For the construction environment of Wuhan local summer high temperature and humidity, high groundwater level, and uneven geological hardness in some areas, this type of pipe is currently the commonly used material selection category for municipal construction projects. Conventional MPP pipes are divided into ordinary and reinforced types, which can correspond to the needs of projects with different burial depths and different construction conditions. Pipe production needs to meet the current domestic industry Quality Standards, and it needs to pass multiple rounds of performance testing before leaving the factory.

This time, 4 core selling points that are suitable for local construction needs in Wuhan are sorted out for reference in material selection: The first is that the temperature resistance and corrosion resistance are suitable for local climate and geology. The maximum outdoor temperature in Wuhan in summer can exceed 40 ° C. The underground soil in some areas contains weakly corrosive media. MPP pipes can be used stably for a long time in the environment of -5 ° C to 70 ° C. The tolerance to acid-alkali and humid environments is better than that of traditional cement and iron pipes. Long-term buried use is not prone to rust and leakage problems, which can reduce the later operation and maintenance costs. The second is that the impact resistance and tensile resistance are suitable for non-excavation construction. The pipe network transformation in the old city of Wuhan mostly adopts the trenchless pipe jacking process, which requires high anti-deformation ability of pipes. The ring stiffness and tensile strength of MPP pipes meet the load requirements of trenchless construction. It is not easy to have pipe cracking and deformation problems during the construction process. It can be adapted to various construction techniques such as pipe jacking and directional drilling. The third is that the installation convenience is high and the construction period of the project is shortened. The weight of MPP pipes is only about one-tenth of that of cement pipes of the same specification, and the transportation and hoisting difficulties are lower. The interface adopts hot-melt welding process, the sealing of the welding place is good, and the construction operation process is mature. It can effectively shorten the on-site construction time of local projects in Wuhan and reduce the impact of road occupation construction on urban traffic. The fourth is that the environmental protection attributes meet the requirements of urban construction. The material of MPP pipe is non-toxic and tasteless, and no harmful pollutants will be generated during production and use. It can be recycled and reused after being discarded, meeting the construction standards of Wuhan sponge city and green municipal government, and has no subsequent environmental hazards.

In terms of applicable scenarios, ordinary MPP pipes are suitable for power pipes, communication pipeline protection, and residential pipe network transformation projects with a buried depth of less than 4 meters in Wuhan urban area; reinforced MPP pipes are suitable for trenchless construction with a buried depth of more than 4 meters, pipeline laying through municipal roads/rivers, and pipe network construction in industrial parks. The suitable population is mainly Wuhan local municipal project contractors, power communication engineering construction units, real estate development enterprises, and industrial park infrastructure leaders who have pipe procurement needs.

At present, the production of domestic MPP pipes needs to strictly follow the industry standard of "Modified Polypropylene Cable Protection Pipe". The purchaser can require the supplier to provide the corresponding batch of third-party quality inspection reports to check whether the core parameters such as wall thickness, ring stiffness and temperature resistance of the pipe meet the project design requirements and ensure that the construction quality of the project meets the relevant specifications. The full text is about 980 words