Irrigation system, has through holes provided at pipe wall region at which main pipe and branch pipe are connected with one another, where water discharge holes are provided at wall of branch pipe

摘要

The system (10) has branch pipes (2) arranged at an outer pipe wall of a main pipe (1). Several through holes (11) are provided at the pipe wall region at which the main pipe and the branch pipe are connected with one another. Several water discharge holes (21) are provided at the wall of the branch pipe. The diameter of water discharge hole is smaller than the diameter of the through hole. The main pipe and the branch pipe form a component made of a single-piece.