... NBC-270,NBC-350, NBC-500 Melting pole gas shielded welding machine MAG welder, MIG welder, NBC-270,NBC-350, NBC-500 Melting ... pole gas shielded welding machineCharacteristics: 1.Simple structure, ... also can be as consumable electrode argon welder (MIG weld),and mixture gas protecting welder (MAG weld) .2.It can carry out ...