Limiting device for seamless steel pipe production

The invention provides a limiting device for seamless steel pipe production. According to the limiting device, a downward convex part is arranged on a limiting beam, a core rod groove is formed in the upper surface of the limiting beam, two limiting beam rails are arranged in parallel, the convex part extends into the space between the two limiting beam rails, one side, close to the convex part, of each limiting beam rail is provided with an inner guide side surface, and each inner guide side surface is a vertical surface; two guide plates are mounted on the two sides of the convex part, the guide plates are provided with vertical guide surfaces, and the guide surfaces are in sliding fit with the inner guide side surfaces of the limiting beam rails. The guide plates in sliding fit with the inner guide side surfaces of the limiting beam rails are arranged, and deflection of the limiting beam is limited, so that the limiting beam is prevented from being stuck, the rolling stability of a core rod is improved, an