A "3-roll bending machine (over 2m)" is a processing machine that forms large metal plates, several millimeters to tens of millimeters thick and over 2 meters wide, into cylindrical, conical, or radius-bent shapes. It is primarily used for processing thick plates such as steel, stainless steel, and aluminum, and its processing capability largely depends on the machine's rigidity and drive system (hydraulic systems are predominant). A typical processing method is roll bending, where a plate is passed between three rolls, and curvature is imparted by adjusting the roll spacing and position. Pre-bending is also important to eliminate straight sections at the ends. Its applications are diverse, including pressure vessels, storage tank shells, large pipes, heat exchangers, wind power generation towers, and shipbuilding components. It is essential equipment for the manufacturing of large structures, and its precision and efficiency significantly affect product quality.