DRAIN PIPE
A drain pipe consisting of an outer pipe casing (1), which downwardly or on the lower surface is provided in the longitudinal direction with a recess, from which two partition walls (3, 4) extend upward and are connected at the upper end to the inside of the pipe casing (1) via extensions (5, 6) of the partition walls (3, 4) resembling inclined roofs. In the inclined roof shaped extensions, which are connected in a line at the inside of the pipe casing (1), overflow openings are milled in a single operation.