The underground drip pipe with a diameter of 13.7 mm is installed invisibly in the ground and is used for watering border plantings and lawns. Drippers are built into the pipe every 30 cm, each delivering water at a fine-tuned rate of 4 l/h. The drippers are self-closing, preventing contamination after decommissioning. To prevent roots from entering the underground pipe, the drippers are equipped with a root barrier. With a centrally mounted base unit, the drip pipe can be extended with an expansion set, with a maximum total length of 200 meters. The water pressure is consistent at every point along the drip pipe to ensure uniform watering. The drip pipe is supplied fully ready for connection with the base unit 1000, an end piece, and a T-piece.