this machine is designed to convey the cans by manual operation, the cans come in from the front part of the machine and come out from the back. the overlap of the cans is controlled by the calibrator and the overlap parts are welded according to the principle of resistance welding. PLC and touch screen's control makes the machine easy to operate, the frequency welding makes its products handsome in shape and its simple structure makes it convenient to change the molds of the cans.