A soft permeable pipe is a new type of material with the function of reverse-filtering and draining water. It overcomes many drawbacks of other drainage pipes. It utilizes the "capillary" phenomenon and "siphon" principle, integrating water absorption, permeation, and drainage into one, and possesses the pressure resistance, permeability, and anti-backflow functions required by engineering design.

Not prone to fracturing due to geological or geographical temperature changes, it achieves the effect of discharging clean water and does not cause secondary pollution to the environment, making it a new type of environmental protection product. It is easy to install, has no joints, and has no special requirements for geology or terrain, allowing for versatile use in any location requiring concealed drainage.

The drainage pipe is supported by a rust-proof spring coil, forming a high-compression soft structure. The non-woven fabric lining filters out silt and impurities, preventing them from entering the pipe, thereby achieving the function of clean percolation. The polyester fiber outer wrapping has excellent water absorbency, quickly collecting excess moisture in the soil. The rubber elastic band integrates the pipe wall covering with the spring steel coil body, providing excellent permeability. Water permeates smoothly into the pipe, while silt and impurities are blocked outside, achieving the purpose of permeation, filtration, and drainage.