Automated Submerged Arc Welding (SAW) Tractor with Four-Wheel Drive Modular Construction and Tandem Welding Head

When fabricating massive structural steel beams, industrial pipes, or infrastructure components, manual welding cannot keep pace. Our series of Automated Submerged Arc Welding (SAW) Tractors are self-propelled welding carriages engineered to deliver flawless, continuous seams hour after hour.

Whether working on open flat plates or crawling inside narrow steel cylinders, Sichuan Shunyao provides specific tractor models engineered for your workshop's exact demands. Built tough to withstand high heat and heavy workloads typical of fabrication yards across the Middle East, Africa, and global markets.

• A1 Thin Wire Tractor: Specifically engineered for thin-plate submerged arc welding. Runs a narrower 2-3mm wire and pairs perfectly with 630A power sources (like ZD5-630) to prevent burn-through on lighter structural components.
• A2 Standard Tractor: The workshop workhorse designed for standard thick-wire SAW applications (3-5mm wire). Features a highly stable four-wheel drive system and 6-degree-of-freedom adjustment for precise welding angle control.
• A4 Super Small Size Tractor: Compact design for internal pipe welding. Minimized control box, column, boom, and wire coil fit inside steel cylinders with diameters of 600mm or larger for internal longitudinal and lathe welding.
• A6 Super Heavy-Duty Tractor: Built for extreme continuous heavy-duty applications. Reinforced mechanical structure supports tandem welding heads (dual-wire setup) for multi-procedure welding, drastically increasing deposition rates. Handles thick 3-6mm wire effortlessly.

• Modular Construction: Every component designed for easy mounting and dismounting, enabling fast maintenance and job-specific customization.
• Unbeatable Stability: Reliable four-wheel drive system ensures constant, stutter-free movement along tracks or workpieces for uniform weld penetration.
• Extended Consumable Life: Specialized combined wire feeding wheel grips wire securely without grinding, extending mechanism lifespan and improving production efficiency.
• Advanced Control Options: Available with intuitive heavy-duty control panels, including digital interfaces (KZ-4D) for precise multi-parameter tracking or rugged analog boxes (KZ-1) for reliable operation in harsh environments.