Orbital welding machine for tube to tubesheet welding is a high-precision automated welding equipment. The equipment adopts a servo drive system to achieve 360° rotation welding to ensure uniform and defect-free welds. In addition, the orbital welding machine for tube to tubesheet welding is equipped with an intelligent control system that can preset a variety of welding parameters to adapt to a variety of materials such as stainless steel, titanium alloy, and nickel-based alloy.