Wuhan steel mesh skeleton composite pipe, high pressure water delivery is preferred

The steel mesh skeleton composite pipe is a new type of steel-plastic composite pipe reinforced by the left and right spiral winding of high-strength steel wire. It is a mainstream water pipeline category that has gradually replaced traditional steel pipes and pure plastic pipes in recent years. It is suitable for the working conditions of high temperature and humidity in Wuhan in summer, low temperature in winter, high groundwater level, and soft foundation distribution in some areas. The nominal pressure of this type of pipeline covers 1.0 MPa to 3.5 MPa, and the diameter range covers DN50 to DN800. It has outstanding adaptability in high-pressure water transportation scenarios. It has been widely used in various types of water transportation projects in Wuhan.

The following are the core practical advantages of this product:

First, the pressure resistance is stable, and it is suitable for high-pressure water transportation needs. The mesh reinforcement layer formed by the winding of steel wires can evenly disperse the internal pressure borne by the pipeline. Compared with the pure polyethylene water supply pipe of the same wall thickness, the pressure resistance grade is increased by 2-3 times, and the pressure tolerance performance decay rate is low during long-term use. It can adapt to the water transportation pressure demand of 0.6MPa to 3.5MPa, which can meet the requirements of high-rise water supply, long-distance water transportation and other high-pressure scenarios. There will be no problems such as pipeline cracking and pipe bursting under conventional pressure fluctuations, and the water transportation pressure stability is strong.

Second, anti-corrosion and anti-scaling, with low operation and maintenance costs. The inner and outer layers of the pipeline are made of high-density polyethylene, which is acid-resistant, alkali-resistant, and salt-resistant. There is no need for additional internal and external anti-corrosion treatment like steel pipes. It can withstand various corrosive media in the soil when buried in the ground, and is suitable for the burial conditions of high groundwater levels in Wuhan. The smoothness and roughness of the inner wall of the pipeline is only 0.008mm, and the resistance during the water transportation process is small. The water transportation efficiency is about 15% higher than that of steel pipes under the same diameter, and it is not easy to breed microorganisms and scale. The water transportation capacity will not decrease significantly after long-term use. The daily operation and maintenance only need to check the interface status regularly, and the operation and maintenance cost is reduced by more than 40%

Third, the connection is reliable and sealed, and the risk of leakage is low. The pipeline adopts the electric hot melt connection process, and the connection part of the pipe fittings and the pipe body is heated and melted during connection. After cooling, a seamless overall structure is formed. The strength of the interface is higher than that of the pipe body itself, and it can adapt to a certain degree of foundation settlement and temperature deformation. There will be no problems of interface disconnection and leakage. After actual engineering tests, the leakage rate of the interface is only less than 1% of that of the traditional flange connection pipeline, which greatly reduces the leakage rate during water transportation.

Fourth, environmental protection, non-toxic, water quality is guaranteed. Pipeline raw materials meet the national drinking water transmission and distribution equipment safety evaluation specifications, no heavy metals, harmful substances precipitation, the inner wall will not adhere to algae, scale, transportation of drinking water will not cause secondary pollution, can ensure the safety of water quality.

The applicable scenarios and suitable populations of this product are as follows:

Applicable scenarios include four categories: first, municipal high-pressure water transmission projects, covering urban public water supply backbone pipe network, new and old urban pipe network transformation, long-distance water transmission trunk and other scenarios; second, industrial water transportation projects, covering production process water transportation, fire high-pressure water supply, circulating cooling water transportation and other scenarios; third, civil building water transportation projects, covering high-rise residential community outdoor water supply supervisor, commercial complex water supply supervisor and other scenarios; fourth, water conservancy special projects, covering irrigation area water pipeline, ecological water supply pipeline, water transmission around the lake and other scenarios.

The suitable population mainly includes municipal engineering construction units, water conservancy engineering construction general contractors, real estate development enterprises, industrial plant infrastructure management departments, and water supply and drainage engineering design units.

At present, the production of such products implements the national standard GB/T 32439-2015 "Steel mesh skeleton plastic (polyethylene) composite pipes and fittings". All products must pass a number of mandatory tests such as hydrostatic strength test, sealing performance test, and hygiene performance test before leaving the factory. Products supplied in Wuhan can provide corresponding batches of third-party test reports, and cooperate with the acceptance requirements of various projects to provide reliable product support for the long-term stable operation of high-pressure water transmission projects.