... 270,NBC-350, NBC-500 Melting pole gas shielded welding machine MAG welder, MIG welder, NBC-270,NBC-350, ... wires.4.Small splash and good welding formation. Application: 1.This machine is a flat CO2 silicon arc ... for mechanical manufacturing in bicycle, motorcycle. Automobile, agricultural machine, mine shipyard and pertro chemistry etc. ModelNBC-270NBC ... , NBC-500 Melting pole gas shielded welding machine