NBC-350: 350A Digital IGBT Inverter MIG Welder (GMAW/FCAW) — Industrial Synergic Welding Machine
NBC-350
350A Industrial MIG/MAG Welder
Part of the MIG/MAG Welders product line. Designed and manufactured in Qingdao, China with IGBT inverter technology for reliable industrial performance. CE certified for global export.
Typical Applications: Structural Steel Fabrication, Shipyard & Marine, Container Manufacturing, General Heavy Fabrication, Trailer & Vehicle Body, Pipe Spooling & Pre-Fab
Product Overview
The NBC-350 is a 350A industrial digital synergic MIG welder (GMAW) powered by advanced IGBT inverter modules. It delivers 350A at 60% duty cycle, making it the workhorse of medium to heavy fabrication shops. The NBC-350 features synergic pulse MIG control with double pulse capability for aluminum welding, automatically alternating between high and low energy pulses to produce TIG-like stacked-dime weld appearance without sacrificing deposition rate. The digital control panel provides dedicated programs for mild steel, stainless steel, aluminum, and flux-cored wires with automatic parameter optimization.
Operating on three-phase 380V power, the NBC-350 handles continuous production welding with a 100% duty cycle at 270A. The heavy-duty 4-roll wire feed system accommodates 15 kg spools and delivers wire at up to 24 m/min for high-deposition applications. With material thickness capability from 1mm to 12mm in a single pass, built-in spot and stitch welding timers, and adjustable burnback and inductance control, the NBC-350 is the definitive industrial MIG welder for structural steel fabrication, container manufacturing, shipyard work, and production-line welding. CE certified and built for 24/7 operation.
Detailed Specs — NBC-350
| Parameter | Specification |
|---|---|
| Model | NBC-350 |
| Welding Process | MIG (GMAW) / MAG / Flux-Cored (FCAW) |
| Rated Input Voltage | AC 220V / 380V ±15%, 3-Phase, 50/60Hz |
| Rated Input Power | 14.5 kVA |
| Output Current Range | 50 – 350A |
| Output Voltage Range | 16 – 36V |
| Rated Duty Cycle | 60% @ 350A / 100% @ 270A (40°C) |
| No-Load Voltage | 65V |
| Synergic Control | Yes (one-knob synergic with material library) |
| Pulse MIG | Yes (synergic pulse) |
| Double Pulse | Yes (aluminum mode) |
| Wire Diameter (Solid) | 0.8 / 1.0 / 1.2 / 1.6 mm |
| Wire Diameter (Flux-Cored) | 1.0 / 1.2 / 1.6 mm |
| Wire Diameter (Aluminum) | 1.0 / 1.2 / 1.6 mm |
| Wire Feed Speed | 1.5 – 24 m/min |
| Wire Feed System | 4-Roll driven (heavy-duty) |
| Wire Spool Capacity | D300 (15 kg) |
| Welding Thickness Range | 1.0 – 12mm (steel), 2.0 – 10mm (aluminum) |
| Spot Welding Timer | 0.1 – 10s |
| Stitch Welding | 0.1 – 5s on / 0.1 – 5s off |
| Inductance Control | -10 to +10 |
| Burnback Control | Adjustable |
| Pre-Gas / Post-Gas | 0 – 5s / 0 – 10s |
| Crater Fill | Adjustable current/time |
| Efficiency | ≥87% |
| Protection Class | IP21S |
| Insulation Class | F |
| Cooling | Forced Air |
| Dimensions (L×W×H) | 720 × 380 × 600 mm |
| Net Weight | 38 kg |
| Certifications | CE, RoHS (CSA available) |
| OEM Customization | Color, panel layout, input voltage, branding |
Application Scenarios
Structural Steel Fabrication
High-deposition MIG welding of I-beams, columns, trusses, and structural assemblies in building construction with excellent penetration and mechanical properties.
Shipyard & Marine
Heavy MIG/MAG welding of hull plates, stiffeners, deck structures, and marine fabrications with flux-cored wire for outdoor and windy conditions.
Container Manufacturing
Continuous production MIG welding of shipping containers, storage containers, and modular building units with consistent bead appearance and penetration.
General Heavy Fabrication
Versatile MIG/MAG welding of mild steel, stainless steel, and aluminum fabrications from 3mm to 12mm including machine frames, platforms, and industrial equipment.
Trailer & Vehicle Body
MIG welding of truck trailers, flatbeds, tipper bodies, and commercial vehicle frames with high travel speed and excellent sidewall fusion.
Pipe Spooling & Pre-Fab
Shop-based MIG welding of pipe spools, flanges, and pipe supports in 1G/1F and 2F positions for modular piping assemblies.
NBC-350 vs Adjacent Models
| Model | NBC-250 | NBC-350 | NBC-500 |
|---|---|---|---|
| Rated Current | 250A | 350A | 500A |
| Input Voltage | 220V 1-Phase | 220/380V 3-Phase | 380V 3-Phase |
| Current Range | 40 – 250A | 50 – 350A | 50 – 500A |
| Duty Cycle @ Max | 60% @ 250A | 60% @ 350A | 60% @ 500A |
| 100% Duty Cycle @ | 195A | 270A | 400A |
| Wire Feed Speed | 1.5 – 22 m/min | 1.5 – 24 m/min | 1.5 – 28 m/min |
| Max Steel Thickness (Single Pass) | 8mm | 12mm | 20mm |
| Max Aluminum Thickness | 6mm | 10mm | 16mm |
| Double Pulse | No | Yes | Yes |
| Stitch Welding | No | Yes | Yes |
| Wire Spool | D200/D300 | D300 | D300 |
| Net Weight | 25 kg | 38 kg | 55 kg |
| Best For | Auto body, sheet metal, light fab | Structural steel, medium fab, production | Heavy structural, shipbuilding, continuous production |
Technical Highlights
Double Pulse for Aluminum
Synergic double pulse mode alternates between high-energy (penetration) and low-energy (cooling/freezing) pulses, producing TIG-like stacked-dime bead appearance on aluminum without any operator manipulation. Ideal for visible architectural welds.
Programmable Stitch Welding
Built-in stitch welding timer with independent on/off intervals (0.1-5s each). Reduces heat input and distortion on thin sheet metal while maintaining consistent weld spacing for automotive panel work.
Material Library with Auto-Parameters
Pre-loaded synergic programs for mild steel (CO2/Mix), stainless steel (Mix), aluminum (Argon), and flux-cored wires. Select material and thickness, and the digital controller sets all parameters automatically.
270A @ 100% Duty Cycle
With 100% duty cycle at 270A, the NBC-350 handles continuous production-line welding without thermal pauses. Suitable for robotic integration, positioner work, and automated GMAW welding cells.
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