“Hot wire” welding head for tube and pipe
The MU IV 195 HW is a high-performance “Hot Wire” TIG welding head engineered for precision multi-pass welding of pipes and tubes. Designed to deliver both flexibility and consistent weld quality, it offers exceptional durability and ease of use—making it an ideal choice for industrial applications requiring stable operation and high productivity.
This welding head incorporates a versatile “one-size-fits” design paired with the Grip-it clamping mechanism to ensure fast attachment across multiple applications. Operators benefit from a quick-change electrode system that reduces downtime, as well as an integrated wire feeder equipped with closed-loop regulation for precise control of wire speed.
The unit includes motorized Arc Voltage Control (AVC) and Torch Oscillation Control (OSC), enabling optimized performance during multi-pass welding of medium-wall pipes. A reinforced cable-hose assembly, developed with high-temperature-resistant materials and water cooling, ensures long-term durability. Additionally, the rotation clutch system makes cable management easy and efficient.
The MU IV 195 HW simplifies handling and adjustment through its user-friendly design and “one-side” clamping approach, allowing operators to mount the unit quickly and efficiently. Its wide working range accommodates outer diameters from 3″ to 7.7″ (76 – 195 mm), making it suitable for a broad variety of pipe welding tasks.
Thanks to its closed-loop water cooling system, the welding head maintains an exceptionally high duty cycle even under demanding conditions. Combined with the increased deposition performance of the Hot Wire process and Polysoude’s 50+ years of engineering refinement, the result is a system that offers impressive flexibility, productivity, and long-term reliability.
Benefits and Features:
– O.D. Diameter Range: 3″ to 7.7″ (76mm – 195 mm)
– Welding head clamps only on one side of the weld joint
– Closed loop water cooling for highest duty cycle
– Rotation clutch device for quick cable winding
– Motorized Arc Voltage Control (AVC) and Torch Oscillation Control (OSC) for multi-pass welding of medium wall thicknesses
– Reinforced cable-hose assembly
– Integrated wire feeder
– Quick clamping system for all situations
