In order to produce a pressure-resistant housing (10) of the explosion protection type ex-d, the process is started with two sheet-metal blanks which are bent in a u-shaped manner. Said sheet-metal blanks are joined by being inserted one into the other, bound and then welded together, without the provision of a weld seam, by a circumferential fillet weld. A large aperture (28) is preferably provided on one side of the housing (10). Said aperture can be closed by a threaded cover or by a flat cover.