Automatic welder for pipe fitting nipple

The utility model discloses an automatic welder for a pipe fitting nipple, which comprises a frame and an argon arc welder, wherein the argon arc welder is connected with a welding gun; a worktable is arranged on the frame; a pipe fitting inlet device and a nipple support propulsion device are arranged on the worktable and oppositely arranged; and the welding gun is arranged between the pipe fitting inlet device and the nipple support propulsion device. By adopting the technology, the welding quality and the production efficiency are greatly improved, the production cost is reduced, and the efficiency is improved; and moreover, because the nipple is fixed forcibly during the welding process, the phenomenon that the nipple is pulled obliquely during the manual welding process cannot occur.