The utility model provides a cross beam, which relates to the technical field of
bed support frames, and comprises a
pipe with a cross section provided with a closed structure, a cross beam main body is constructed by adopting the
pipe with the closed section, the overall
flexural rigidity of the structure is improved, the first side surface of the
pipe protrudes to form a first bulge, and the first bulge and the upper end surface of the pipe form a first step surface; the first step face is used for supporting the
bed board, the first protrusion and the lower end face of the pipe form a second step face, the end, close to the upper end face, of the first protrusion is provided with a mounting hole, and the mounting hole is used for mounting the supporting pipe, so that the mounting site of the supporting pipe is directly associated with the
main bearing area, and a force transmission path is optimized. The supporting pipes installed at the positions of the installation holes can also support the
bed board, the bed board can be better attached after being placed on the bed board, and meanwhile the supporting force of the beam is improved due to the fact that the beam body is constructed by the closed-section pipes.