WS-200: 200A Precision IGBT Inverter TIG Welder (GTAW) — Dual Process AC/DC Welding Machine
WS-200
200A Precision TIG/Stick Welder
Part of the TIG Welders product line. Designed and manufactured in Qingdao, China with IGBT inverter technology for reliable industrial performance. CE certified for global export.
Typical Applications: Stainless Steel Pipe, Thin Sheet Metal, Hobby & DIY, Bicycle Frames, Kitchen Equipment
Product Overview
The WS-200 is a compact 200A AC/DC TIG welder (GTAW) built on advanced IGBT inverter technology with full digital pulse control. Designed for precision welding of thin materials, it delivers stable arc performance from 10A to 200A with high-frequency (HF) arc start, eliminating tungsten contamination and ensuring clean weld starts every time. Its dual pulse capability makes it an excellent aluminum welding machine when operating in AC mode, while DC mode handles stainless steel, mild steel, and titanium with equal precision.
Weighing just 8 kg, the WS-200 is the most portable TIG welder in the WS series, ideal for on-site maintenance, fabrication workshops, and hobbyist use. The digital control panel provides independent adjustment of pre-flow, post-flow, pulse frequency, pulse duty, base current, peak current, up-slope, and down-slope. With CE certification and IGBT inverter efficiency exceeding 85%, the WS-200 offers professional-grade GTAW welding performance in an entry-level package.
Detailed Specs — WS-200
| Parameter | Specification |
|---|---|
| Model | WS-200 |
| Welding Process | TIG (GTAW) / Stick (SMAW) |
| Rated Input Voltage | AC 220V ±15%, 1-Phase, 50/60Hz |
| Rated Input Power | 4.5 kVA |
| Output Current Range (TIG) | 10 – 200A |
| Output Current Range (Stick) | 10 – 180A |
| Rated Duty Cycle (TIG) | 60% @ 200A / 100% @ 155A (40°C) |
| Rated Duty Cycle (Stick) | 60% @ 180A / 100% @ 140A (40°C) |
| No-Load Voltage | 65V |
| AC/DC Mode | AC / DC (TIG), DC (Stick) |
| Pulse Frequency | 0.5 – 500 Hz |
| Pulse Duty Ratio | 10 – 90% |
| Pre-Flow Time | 0 – 10s |
| Post-Flow Time | 0 – 25s |
| Up-Slope / Down-Slope | 0 – 10s each |
| Arc Start | High Frequency (HF) |
| AC Balance (Cleaning Width) | 20 – 80% |
| Tungsten Electrode Size | 1.0 – 3.2mm |
| Welding Thickness Range | 0.3 – 6mm (steel), 0.5 – 5mm (aluminum) |
| Efficiency | ≥85% |
| Protection Class | IP21S |
| Insulation Class | F |
| Cooling | Forced Air |
| Dimensions (L×W×H) | 420 × 200 × 300 mm |
| Net Weight | 8 kg |
| Certifications | CE, RoHS (CSA available) |
| OEM Customization | Color, panel layout, input voltage, branding |
Application Scenarios
Stainless Steel Pipe
Root pass and fill pass on schedule 10/40 stainless pipe, food-grade sanitary tubing, and process piping.
Thin Sheet Metal
0.5mm to 3mm stainless steel and carbon steel sheet welding with minimal distortion and no burn-through.
Hobby & DIY
Home workshop fabrication, custom automotive parts, motorcycle frames, and artistic metalwork.
Bicycle Frames
Chromoly and aluminum bicycle frame fabrication and repair with precise heat control for thin-wall tubing.
Kitchen Equipment
Sanitary stainless steel welding for commercial kitchen counters, sinks, and food processing equipment.
WS-200 vs Adjacent Models
| Model | WS-200 | WS-250 | WS-315 |
|---|---|---|---|
| Rated Current | 200A | 250A | 315A |
| Input Voltage | 220V 1-Phase | 220/380V 1/3-Phase | 220/380V 3-Phase |
| TIG Current Range | 10 – 200A | 10 – 250A | 10 – 315A |
| Duty Cycle @ Max | 60% | 60% | 60% |
| Pulse Frequency | 0.5 – 500 Hz | 0.5 – 500 Hz | 0.5 – 2000 Hz |
| AC Balance | 20 – 80% | 20 – 80% | 10 – 90% |
| Max Aluminum Thickness | 5mm | 8mm | 12mm |
| Net Weight | 8 kg | 12 kg | 16 kg |
| Memory Presets | 5 | 10 | 20 |
| Best For | Light fabrication, hobby, thin sheet | Medium fabrication, mold repair, food equipment | Industrial aluminum fab, aerospace, ship piping |
Technical Highlights
HF Arc Start
High-frequency contactless arc ignition eliminates tungsten electrode contamination. Clean starts on every weld without scratching, critical for X-ray quality root passes on pipe.
AC/DC Dual Pulse
Independent pulse control in both AC and DC modes. Adjustable pulse frequency (0.5-500Hz), peak/base current, and pulse width for optimal penetration profile and reduced heat input on thin materials.
Ultra-Portable 8 kg
The lightest TIG welder in the WS series. Integrated carry handle and compact footprint (420×200×300mm) make it ideal for mobile welding services and on-site maintenance.
Digital Memory Presets
Store up to 5 custom welding parameter sets for quick job changeover. One-touch recall of pre-flow, pulse, slope, and post-flow settings reduces setup time between different material types.
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