An ideal welding machine for drainage pipes up to Ø160mm. It consists of a machine body with a pressure regulating device, a pair of clamps, two lateral supports, an electrically controlled milling cutter for levelling the ends of the pipe and/or fitting with a safety microswitch, an extractable heating plate with automatic device to control the temperature, a sliding support and heat protection grid, a steel case that acts as a work bench and cover when transporting the machine. The Mini 160 AC can weld fittings such as bends, tees.