Filter for insertion into a fluid-bearing pipe

The filter has a support pipe (1) and a flat filter element (8) which is fixed at the support pipe and whose clear inner cross section is covered. The support pipe has a pipe socket (2) with an end area (5), an edge (4) closing the end area and a pipe opening (3) circumscribed from the edge. The filter element covers the pipe opening of the pipe socket, in which the filter element is fitted on the edge of the pipe opening. the pipe nozzle in its end area has a corrugation (9) or a bead running parallel to the edge.