Precast production ensures accurate dimensions, and the built-in gravel filtering layer eliminates the need for additional filtering materials. Its 500kPa compressive strength can withstand the rolling of heavy vehicles, with a service life of several decades. The mortar joint connection provides good sealing performance, and it is compatible with all types of soil. It resists high and low temperatures, making it suitable for outdoor projects in extreme climates. The smooth surface is not easy to accumulate dirt, facilitating cleaning and maintenance.
Each unit has a length of 0.6m, with a width of 200mm, height of 150mm, and drain slot width of 15mm. The built-in gravel has a particle size of 5-10mm, with a compressive strength of 500kPa and operating temperature range from -40℃ to 120℃. Each meter of the drain weighs 8.5kg, and the mortar joint fits the same size precast blind drains. The permeability rate is 18L/(m²·s), and the installation depth ranges from 0.3m to 1.5m.
It is suitable for airport runway underground drainage, heavy commercial parking lot drainage, railway subgrade drainage, port freight area drainage, and urban main road subgrade drainage. It fits scenarios that require hidden drainage with high load-bearing requirements.
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