The invention concerns a drip irrigation pipe (1) comprising a tube (2) designed to be connected to a pressurised water source. The tube is provided with two lateral lapped edges (3a, 3b) superposed on each other and are formed integral with said tube. The pipe (1) further comprises, at intervals, orifices allowing water to trickle through (11) communicating the tube (2) inside with outside environment. The invention is characterised in that a strip (4) is fixed in sealed manner between the lapped edges (3a, 3b), and the orifices (11) are produced in said strip (4) by swaging said strip (10, 10A) so that they constitute through orifices substantially on either side of a longitudinal plane of symmetry (P) of the strip (10, 10 A), each trickling orifice (11, 11A) comprising at one first end an inlet chamber (13) designed to emerge into one of said pipes and at the other end a discharge chamber (14) designed to emerge outside said one pipe; the swaging process being also designed so that the discharge chambers of the trickling orifices located substantially on either side of the plane of symmetry (P) of the strip do not communicate with each other.
