TIG Welding Machine

OTC DAIHEN VRTP400 DC TIG/Stick Dual-Purpose Welder

The VRTP400 is a rugged DC TIG/stick dual-purpose welder from OTC DAIHEN. Its innovative stackable design (upper unit’s feet fit into lower unit’s handle) saves valuable shop floor space. A standard terminal block for automatic machines facilitates integration with automation. Multiple protection circuits (over-voltage, under-voltage, phase loss) ensure safety under various power conditions. A built‑in anti‑shock function (switchable via PCB) makes it ideal for damp, high‑altitude, or confined‑space work. The dust‑resistant structure guarantees reliable operation in harsh environments. A special crater adjustment function optimizes weld finish.

✨ Key Technology Advantages

• Stackable design — Space‑saving by placing one unit atop another.

• Standard automation terminal block — Easy connection to automatic machinery.

• Multiple circuit protection — Over‑voltage, under‑voltage, phase loss protection.

• Anti‑shock function — Switchable for safe operation in damp/confined spaces.

• Dust‑resistant structure — Reliable in harsh environments.

• Special crater adjustment — Improved crater filling, reduced defects.

• Wide current range — TIG 4-400A, Stick 10-400A for thin to medium plates.

🔧 Primary Applications

Steel structures, pressure vessels, pipe welding, general fabrication, maintenance, high‑altitude and damp environment construction – TIG welding of stainless steel, carbon steel, alloy steel, and stick welding.

📊 OTC DAIHEN VRTP400 Technical Specifications