Currently, steel-plastic sheet piles have been widely applied and promoted both domestically and internationally. Domestically, their applications have extended to various fields such as building construction, bridges, tunnels, and hydraulic engineering, gaining increasing recognition and popularity. Abroad, the use of steel-plastic sheet piles is very common, particularly in developed countries and regions like Europe, North America, and Japan, where they have become one of the mainstream building materials.

High molecular weight plastic sheet piles are a quick, efficient, and environmentally friendly form of pile foundation. They are lightweight, with high strength and excellent water-stopping performance; they are corrosion-resistant, have strong weather resistance, and have a long service life; they are reusable and recyclable; and they comply with the national policy promoting the use of new materials such as "plastic instead of steel" and "plastic instead of wood" for energy conservation and environmental protection. The products are produced on an industrial scale with mechanized construction, ensuring high efficiency and short construction periods (one-thirtieth of traditional stone embankment construction) and low construction costs (two-thirds of traditional stone embankment construction costs and half of steel sheet pile construction costs). High molecular weight plastic sheet piles address the shortcomings of traditional concrete slope protection and embankment projects, such as large quantities of earth and stone, long construction periods, heavy labor, high costs, and difficulties in reinforcement and repair, as well as the issues of steel sheet piles being prone to corrosion and rust, not environmentally friendly, and having high cost. They can be widely used in irrigation channels, waterways, construction and maintenance of small and medium-sized reservoir embankments, river embankments, and revetments; in the support of excavation pits, slope protection, retaining walls, fences, flower beds, impermeable walls, cofferdams, ground treatment, underground parking lots, artificial lake shores, and wastewater treatment in civil engineering; in roadbed protection, underground tunnels, culverts, pipeline laying, road construction, port wharfs, and shipyard construction in transportation engineering; in flood control and disaster reduction projects, including embankment reinforcement and heightening, prevention of landslides, seepage prevention, prevention of mud and rock flows, and wind and sand control; and in the construction of embankments, wavebreak walls, aquaculture, and salt碱land breeding base embankments in marine development. Currently, high molecular weight plastic sheet piles are widely used in many developed countries, including Canada, the United States, the United Kingdom, Germany, and Poland.