Selection of MPP Protection Tube for Wuhan Power Transmission and Transformation Project

MPP protection pipe is a special power pipeline protection pipe made of modified polypropylene as the main raw material. It is developed for the pipeline protection needs of power transmission scenarios and is currently the mainstream alternative material for power pipeline protection in power transmission and transformation projects in Wuhan. The pipe is conventionally divided into ordinary and reinforced types, which can be adapted to the needs of power transmission and transformation projects with different burial depths and different construction conditions. The inner wall friction coefficient of the pipe is low, the weight is moderate, and the transportation and construction threshold is low. It can be put into use without special pre-treatment.

The core practical advantages of this type of MPP protection pipe mainly include four points: First, it has strong construction adaptability, good toughness and resistance to high temperature deformation, and can be adapted to the two construction modes of open-cut laying and non-excavated pipe jacking in Wuhan. The pipe interface adopts hot-melt docking process, and the joint is well sealed, which can effectively avoid groundwater and soil impurities from infiltrating into the pipeline. It can also adapt to the construction requirements of different sections of power transmission and transformation projects, reducing the additional cost of construction. Second, the protection performance is stable, with excellent insulation and corrosion resistance, which can withstand the conventional temperature rise generated by the operation of power pipelines for a long time, resist the external environmental impact such as soil pH change and rainwater soaking in Wuhan area, and the service life can reach more than 50 years under normal working conditions, which greatly reduces the follow-up pipeline maintenance cost of power transmission and transformation projects. Third, the comprehensive cost performance is outstanding, the supply of raw materials is stable, and the production process is mature. Under the premise of the same protection level, the procurement cost is lower than that of similar metal protective pipes, and the transportation weight is light, the loss rate is low, and the large-scale special equipment is not required during the construction process, which can compress the comprehensive cost of pipe procurement and construction of the overall project. The fourth is environmental compliance, the pipe production process without harmful additives, the use of the process will not precipitate harmful substances to the soil, in line with the Wuhan area of municipal engineering environmental protection material selection requirements, after the later scrap can be recycled and reused, without special hazardous waste treatment, reduce the life cycle of environmental disposal costs.

This type of MPP protection tube is suitable for the underground transformation of power transmission and transformation overhead lines with voltage levels of 10kV and above in Wuhan, the laying of new power transmission and transformation out-of-app lines, and the relocation and transformation of power transmission and transformation pipelines in urban core areas. At the same time, it can be adapted to the pre-embedding needs of power pipelines for simultaneous construction of municipal roads. The suitable population includes the procurement department of the general contractor of power transmission and transformation projects, the person in charge of material selection of the power construction unit, and the relevant procurement decision-makers of the municipal power pipeline project construction party.

At present, this type of MPP protection pipe meets the current standards of the national power industry pipe, and can provide the corresponding batch of product inspection and qualification reports to meet the compliance requirements of power transmission and transformation projects in Wuhan. The purchaser can choose the corresponding specifications according to the actual buried depth of the project, construction conditions, and protection level requirements to ensure the adaptability and economy of the project material selection.