As a national transportation artery, the construction and operation of railways have extremely high requirements on the stability and durability of infrastructure. The water supply and drainage system, as the "life infra" to ensure the normal operation of railways, has strict standards for the compressive strength, corrosion resistance and service life of pipes. HDPE steel mesh skeleton pipe has been widely used in railway water supply and drainage projects due to its excellent comprehensive performance, making it an ideal choice to solve the problems of pipeline laying in complex environments.

HDPE steel mesh skeleton pipe is based on high-density polyethylene (HDPE), and the internal high-strength steel wire is used as the reinforced skeleton. It is composite molded through a special process, which combines the chemical corrosion resistance, flexibility and high compressive strength of HDPE. The pipe can work stably in the temperature range of -40 ° C to 60 ° C, and the weight is only 1/3 of the steel pipe. It does not require large machinery during installation, which can effectively reduce the difficulty and cost of construction. At the same time, its unique structural design makes it excellent impact resistance, which can adapt to the complex geological conditions such as rock layer, frozen soil and water seepage that may be encountered in railway construction, and reduce the risk of pipeline damage.

In a new mountainous freight railway project, the water supply and drainage system needs to cross mountains and river valleys, facing multiple challenges such as high water pressure and geological instability. The project party chose the AD HDPE steel mesh skeleton pipe as the main pipeline to solve the construction problems through the following solutions: First, for the rock section of the mountain, special joints were used to connect to ensure the sealing of the pipeline in the extrusion environment; second, in the valley section, non-excavation directional drilling was laid using the flexibility of the pipe to reduce the damage to the surface vegetation; third, for the water seepage point, with the special anti-corrosion sleeve of the AD pipeline, to improve the anti-aging ability of the pipe. After 2 years of construction and 1 year of operation monitoring, the pipeline system did not appear leakage, blockage and other problems, and the pressure resistance fully met the design requirements, providing a reliable guarantee for the safe operation of the railway.

In railway water supply and drainage projects, HDPE steel mesh skeleton pipes have effectively solved the application limitations of traditional pipes in scenarios such as high pressure, corrosion and complex terrain due to their excellent mechanical properties, environmental stress cracking resistance and convenient construction characteristics. Whether it is a new line or an upgrade of an existing railway, AD HDPE steel mesh skeleton pipes can help railway infrastructure building with stable performance and efficient construction, and contribute pipeline strength to the strategic contribution of a transportation power.