Industrial Inverter MIG/MAG Welder with 30% Power Savings, Stable Arc Technology, and Low Spatter Welding for Heavy-Duty Applications

The NB Series (NB-350/500/630) is our heavy-duty, semi-automatic MIG/MAG welding power source. Designed for steel fabrication yards, shipbuilding, and heavy machinery manufacturing, this workshop workhorse welds low carbon steel, alloy steel, and stainless steel during continuous shifts. It reduces power consumption by 30% compared to traditional welders, delivering immediate electricity cost savings.

• Stable Arc Performance: Full-bridge soft-switch inverter technology eliminates voltage spikes and drops, maintaining complete arc stability.
• Clean Welds, Reduced Grinding: Dual closed-loop control with PWM pulse-width modulation minimizes spatter, creates deep fusion pools, and produces clean weld beads that save cleaning time.
• Consistent Wire Feeding: External wire feeder with 4-wheel dual-drive structure ensures consistent wire pushing over long cables, even with heavy flux-cored wires.
• Built-in Safety Protection: Automatic cut-offs for overheating and line surges protect the machine and operator from electrical hazards, preventing board burnouts.

This plug-and-play package includes everything needed for immediate operation:

• 1 x Heavy-duty External Wire Feeder
• 1 x 3.5-meter Industrial MIG Welding Torch
• 1 x CO2 Gas Heating Meter / Regulator
• 2 x Spare Wire Feeding Wheels
• 8-meter Welding Interconnect Cable
• 3-meter Ground Cable with heavy clamp
• 8-meter Gas Air Tube
• 1 x Handheld Welding Mask & 1 x Allen Wrench

Yes, absolutely. The feeding rollers and gas system are ready for both standard solid wires (with shielding gas) and gasless flux-cored wires, making it perfect for onsite structural steel assembly.

Thanks to our dual closed-loop system, the internal chips adjust the pulse width millisecond by millisecond. Even if other large machines in your shop cause the main power grid to fluctuate, the welding current at the torch remains steady.

Yes. With an IP21 industrial rating and built-in heat and line sensors, the welder shuts down safely if it detects a dangerous internal overload, protecting your team from live-voltage exposure.