Full-automatic pipe pile welding equipment and welding method

The invention discloses full-automatic pipe pile welding equipment and a welding method. The full-automatic pipe pile welding equipment comprises a welding assembly and a feeding assembly; the weldingassembly comprises two wires, the first wire is provided with an upper magnetic head, and the second wire is provided with a lower magnetic head; the welding assembly further comprises a first vertical drive cylinder, an upper horizontal drive cylinder, a lower horizontal drive cylinder, an upper pneumatic finger and a lower pneumatic finger; a piston rod of the first vertical drive cylinder is provided with a connecting plate; cylinder bodies of the two horizontal drive cylinders are fixed on the upper surface and the lower surface of the connecting plate respectively; and a piston rod of each horizontal drive cylinder is connected with a fixed portion of the corresponding pneumatic finger. The key points of the method are as follows: by utilizing the two wires to electrify two end plates, the two end plates whi