Welding Lathe Machine for Automatic Welding is designed to apply a consistent weld on the entire outer diameter of any round part, with no stopping and starting until the work piece is complete. The Automatic Welding Machine can be easily adapted to numerous applications for circular work pieces. The Automatic Welding Machine is capable of improving quality of the welding. The Welding Lathe Machine for automatic Welding is based on the modular concept.