The rolling machine is divided into two types: mechanical and hydraulic. The mechanical rolling machine is to roll carbon steel, stainless steel, and yellow metal profiles {angle steel, strip steel, channel steel, pipe, etc.) into a circle with a diameter of φ320-φ6000mm. A high-quality, high-efficiency rolling device for rings and flanges. It has a unique structure. It has small size, low energy consumption, high efficiency, no noise, easy installation and use, simple operation, strong bearing capacity, long life, and rolling. Fast speed. Reliable product quality and other advantages. The hydraulic round rolling machine is an upgraded product of the mechanical round rolling machine, which can increase the thickness and width of the rolling round, and can complete the shortcomings of the mechanical round rolling that cannot roll the thick plate, replacing the original steel plate blanking, docking, and correction. Lathe processing and other complex processes save oxygen, acetylene, labor, raw materials, etc., and are the advanced matrix for manufacturing flanges.