The tandem orbital tube plate welding is a tube-plate welding machine developed according to the actual working conditions of various heat exchangers, pressure vessels, boilers and other manufacturers. The equipment is equipped with a dedicated operating frame, Panasonic 400A welder, Siemens central processor, PLC control, color touch screen. It is also equipped with a special welding head to make the automatic welding of the tube head and the tube sheet. Modular design of power supply and electrical parts, easy to maintain, safe and reliable to use. Compared with orbital tube to plate welding, tandem orbital tube plate welding improves productivity .