YUNKANG WELDING's adjustable welding roller is driven by a cycloidal pinwheel reducer or a worm gear reducer, driven by dual motors. According to the customer's needs, the center distance of the roller can be adjusted through reserved screw holes or screws to adapt to changes in workpiece diameter. The rollers are divided into three types: rubber wheels, steel wheels, and steel-rubber combination wheels. The control system can be selected from key digital control type, switch digital control type, and switch relay control type, and can be controlled in conjunction with other equipment. This roller frame is mainly used for cylindrical weldments, and can also be used with other tooling to assemble and weld cones and segmented unequal diameter rotary bodies. This product is widely used in wind power, petrochemical, pressure vessels, pipelines, steel structures, boilers, shipbuilding, cladding repair and other industries.