Wanfang MPP power pipe, also known as MPP power cable protection pipe and MPP cable protection pipe, is divided into excavation type and non excavation type, and MPP non excavation type power pipe is also known as MPP jacking or dragging pipe. The MPP power pipe adopts modified polypropylene as the main raw material, which is a construction project of laying pipes and cables in special sections such as roads, railways, buildings, river bed, etc. without large amount of dredging, earth excavation and pavement damage. Compared with the traditional "trenching and burying pipe method", the trenchless power pipe project is more suitable for the current environmental protection requirements, removing the dust, traffic jams and other disturbing factors caused by the traditional construction. This technology can also lay pipelines in some areas where excavation cannot be carried out, such as historic sites protection area, downtown area, crop and farmland protection area, expressway, river, etc. Wanfang MPP pipe has the characteristics of high temperature resistance and external pressure resistance, which is suitable for the pipe material of high-voltage transmission line above 10kV.
DLT 802.7-2010 technical conditions for conduits for power cables Part 7: modified polypropylene plastic cable conduits for Trenchless use
Key words: insulation, impact resistance, temperature resistance, physical properties, sealing and environmental protection
1. Insulation: the main material of MPP power corrugated pipe is polypropylene, which is non-conductive and non heat transfer. It has good insulation performance and meets the requirements of safe use of high voltage power.
2. Good temperature resistance: high thermal deformation temperature and low temperature impact performance, long-term use temperature - 5 ~ 70 ℃.
3. Excellent physical properties: the main material of MPP power pipe is polypropylene, which has the advantages of oxidation resistance, corrosion resistance and acid-base resistance. There is no acid-base neutralization corrosion of glass steel pipe, nor acid corrosion of metal pipe. Its service life can be up to 50 years. The tensile and compressive properties are higher than HDPE.
4. Sealable: MPP power protection pipe can be connected by hot-melt connection and special clamp, without welding seam and flash of other pipes, and will not scratch or cut the cable in dragging; light, smooth and small friction main force.
5. Environmental protection: the main material of MPP power pipe is polypropylene, which is mainly composed of carbon and hydrogen. It is sanitary and environmental protection. The pipe waste can be recycled twice, and there is no waste in the production and recovery process.
1. It is widely used in municipal, telecommunication, power, heat and other pipeline projects.
2. It is widely used in urban and rural trenchless horizontal directional drilling power pipe drainage engineering and open excavation power pipe drainage engineering.
3. It is widely used in urban and rural trenchless horizontal directional drilling sewage pipe project and industrial wastewater discharge project.
1. During the transportation and construction of MPP power pipe, it is strictly prohibited to throw, impact, scratch and expose it.
2. During butt fusion, the axis of the two pipes shall be aligned and the end face shall be cut vertically and flat.
3. The processing temperature, time, pressure and climate conditions shall be adjusted accordingly.
4. The minimum bending radius of the pipe shall be ≥ 75 outer diameter of the pipe.