(Also known as: Plastic Drainage Channels, Drainage Pipes, Wavy Mesh Perforated Pipes), the upper two-thirds of the rigid drainage pipe are equipped with small holes, while the lower one-third is hole-free, preventing secondary seepage of groundwater and quickly draining it away. The product is used in railway construction, highway construction, airport runways, golf courses, soccer fields, large lawns, landscaping, highways, landfill sites, retaining walls, and other large-scale underground drainage projects such as tunnels. It is lightweight, easy to transport and operate. It has a wide temperature range and excellent weather resistance (anti-aging), with a long service life. It has strong shock resistance and excellent resistance to chemical corrosion. Its water collection capability is up to 5 to 10 times that of similar products. The fluid flow rate is up to 2 to 3 times faster than that of steel reinforced concrete or corrugated pipes of the same diameter. It quickly removes collected water to prevent soil and water loss. The bottom is hole-free, facilitating rapid water drainage and preventing secondary seepage.