The invention provides seamless steel
pipe cold
diameter expanding equipment and process, and belongs to the technical field of steel
pipe diameter expansion. The seamless steel
pipe cold
diameter expanding equipment includes a worktable, a first
hydraulic cylinder is fixedly installed on the upper surface of the worktable, a first installation plate is fixedly installed at the output end of the first
hydraulic cylinder, and a
threaded rod is fixedly installed on the side, far away from the output end of the first
hydraulic cylinder, of the first installation plate; a pipe expanding die is connected to the end, far away from the first installation plate, of the
threaded rod in a threaded mode, and a diameter variable head is fixedly connected to the end, far away from the
threaded rod, ofthe pipe expanding die; and a fixing frame is fixedly installed on the upper surface of the worktable and on the side, away from the first hydraulic cylinder, of the work table. Compared with existinglarge-scale equipment, the seamless steel pipe cold diameter expanding equipment is simple in structure, low in equipment cost, and suitable for various small and medium-sized enterprises, the enterprises can carry out large-scale operation conveniently, the equipment is convenient in use process, workers can carry out operation simply, and much more labor is not needed.