A structural casing for an axial turbine engine includes an outer ring (50), an inner hub (52), and a plurality of struts (54) extending radially from the hub (52) to the ring (50), wherein the ring (50) is made of a plurality of angular segments (55, 56, 57, 58, 59) welded together. The segments extend circumferentially of different angles, some segments being larger angularly than others. The structural casing is adapted to be an intermediate casing between two compressors of a turbine engine.