TIG Welding Machine

OTC DAIHEN DA300P AC/DC TIG/Stick Welder

The DA300P is a versatile AC/DC TIG/stick welder from OTC DAIHEN. Its newly developed welding current adjustment function allows operators to increase or decrease output current directly via the torch trigger for optimal welding parameters. Multiple welding modes (DC TIG, AC TIG, AC/DC TIG, stick) ensure high quality across various applications. Adjustable AC frequency and heat input control improve thin‑plate weldability, with a concentrated arc enhancing fillet and butt welds. Reliable arc starting (HF or touch start, even with extended cables) makes it ideal for demanding environments. Widely used in bicycle, e‑bike, automotive, pressure vessel, and pipe industries.

✨ Key Technology Advantages

• Torch‑trigger current adjustment — Real‑time current control for optimal welding.

• Four‑mode versatility — DC TIG, AC TIG, AC/DC TIG, stick welding.

• Adjustable AC frequency — Controls heat input, improves thin‑plate performance.

• Concentrated arc — Easier fillet and butt welding on thin sheets.

• Stable arc starting — HF/touch start, reliable even with long cables.

• Wide current range — DC TIG 4-300A, stick 10-250A, AC TIG 10-300A.

• Lightweight & compact — Only 45kg, easy to move and install.

🔧 Primary Applications

Bicycle/e‑bike frame manufacturing, automotive parts, pressure vessels, pipe welding, thin‑plate fabrication, general manufacturing – especially where thin‑plate quality and arc concentration are critical.

📊 OTC DAIHEN DA300P Technical Specifications