... widely used in steel structure, shipbuilding, transformer, etc, high quality, welcome customers to buy. Application: suitable for ship steel (A, B, D, ... widely used in steel structure, shipbuilding, transformer, etc, high quality, welcome customers to buy. Application: suitable for ship steel (A, B, D, ... mig gas shielded welding, ac arc welder, etc. inverter power supply protect welding machine mig180