MPP single/double wall corrugated pipe

　　Product Description
　　Modified polypropylene (MPP) single/double wall corrugated pipe for power cable protection is a new type of structural wall plastic pipe made of modified polypropylene as the main raw material and a special formula for compound reinforcement modification. It has a novel structure , high strength, good temperature resistance, easy construction and cost saving. As a new product in the industry of power pipes for excavation, this pipe has solved the industry difficulties such as process molding difficulties and material composite reinforcement modification, and creatively designed a novel product structure and button-type connection method. Therefore, this technology has broad applications.
　　The product is suitable for
　　MPP single/double-wall corrugated pipes, which are mainly used in urban and rural open excavation cable pipes for high-voltage transmission lines and cables above 10KV. The ordinary type is suitable for laying under sidewalks and green belts, and the standard type is suitable for laying across roads. There is no need for concrete encapsulation. If the requirements for anti-seismic and compressive applications are more stringent or instead of steel pipes for crossing bridges, reinforced SN50) special customized products can be selected.

　　Performance characteristics
　　1. High cost performance: MPP single/double wall corrugated pipe, made of modified polypropylene, is currently the lightest material among all buried pipes. Under the premise that the pipes achieve the same performance, less material can be put in. The material cost is saved, and compared with the MPP pipe with the same specification ring stiffness requirement, the material cost can be saved by 40%~70%.
　　2. Good rigidity: MPP single/double-wall corrugated pipe has high ring stiffness due to its special single-wall corrugated structure design and high elastic modulus material, which is three times higher than ordinary PVC bellows. Under the required working conditions, the outside of the pipeline does not need to be sealed with cement during construction, and it can be directly backfilled with pipe pillows and fine sand, which greatly reduces construction dust and construction costs.
　　3. Smooth: The inner and outer surfaces of MPP single/double-wall corrugated pipe are smooth and have low friction coefficient; the inner surface is a single-wall corrugated structure, which is in point/contact state with the cable, and the drag resistance is small, which reduces the difficulty of construction.
　　4. Bendable: The unique corrugated structure of MPP single/double wall corrugated pipe makes it have good flexibility, which can adapt to the change of ground subsidence or construction foundation, and ensure the normal protection effect of the pipe on the cable.
　　5. Heat resistance: The main material of MPP single/double wall bellows is modified polypropylene, and the Vicat softening temperature is above 120°C, so it can still maintain good external pressure resistance at higher temperatures, suitable for use as The sheath tube of the high-voltage power line ensures that the cable can be used safely even when it is hot.
　　6. Low temperature resistance: MPP single/double wall corrugated pipe has good low temperature impact resistance, and it has better impact resistance when it is subjected to accidental impact at lower temperature during construction or use at lower temperatures in the south.
　　7. Insulation: The main material of MPP single/double wall corrugated pipe is modified polypropylene, which is non-conductive, non-heat transfer, has good insulation performance, and meets the requirements for high-voltage power safety.
　　8. Corrosion resistance: The main material of MPP single/double wall bellows is modified polypropylene, which has the advantages of corrosion resistance and acid and alkali resistance. There is no acid and alkali neutralization corrosion of glass steel pipes, and there is no acid corrosion of metal pipes. , the service life can be as long as 50 years.
　　9. Sealable: MPP single/double wall bellows can be connected by hot melt connection and special card screen connection. The former is sealed by wave crest butt welding, and the latter is elastically sealed. There is no welding seam or flash of other pipes, so it will not be scratched cables or cut cables in drag.
　　10. Environmental protection: The main material of MPP single/double-wall corrugated pipe is modified polypropylene, which is mainly composed of two elements, carbon and hydrogen. It is hygienic and environmentally friendly. The waste pipe can be recycled twice, and there is no white color in the production and recycling process. pollute.