T Head 419

Orbital Weld Head For Multipass GTAW Pipe Welding


The Magnatech T model weld head is designed to make pipe-to-pipe and pipe-to-fitting welds. It is “full function? – with the capability of reproducing all the motions of a skilled manual welder. The T Head is used for larger diameter/
heavy wall applications, requiring the precise weld process control of gas tungsten arc welding. Interchangeable guide rings provide mounting on the pipe, and allow the T Head to cover a broad size range. The T model weld head improves productivity by increasing duty cycle and reducing repair rates.

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In addition to welding pipe, the T Head is also used for ID and OD welding on larger tanks, vessels, and ductwork.

  • Flexible track allows mounting on complex curved surfaces
  • Standard 2.3m (7.5') Track sections bolt together for longer lengths
  • Magnetic or Vacuum attachment



T HEAD 419


  • Fossil Power Plant Construction/Maintenance
  • Steam Generation Equipment Fabrication
  • Nuclear Power Plant Construction/Maintenance
  • Chemical Facility Construction/Maintenance
  • Shipyard Construction
  • Gas Transmission Pipelines
  • Process Piping


  • WELD HEADS 800 SERIES 805, 810, 820, 830, 840, 860
  • Collets for all tube sizes / fitting geometries
  • Waterproof carry case standard
  • Bench mount bracket
  • Internal weld head cooling standard
  • Convenient flip-up view port allows final inspection before welding
  • Encoder motors provide precise, repeatable speed regulation
  • “Jam? detection/protection. If rotation stops for any reason, it is instantly sensed and power to the motor is immediately interrupted.
  • No more damaged motors or drive trains
  • Standard 8 m (25’) hose pack length
  • New rotation drive design tolerant of metal debris
  • “Home? position switch automatically readies the head for removal following weld completion, and never requires adjustment
  • Simple assembly makes field service straightforward

Messages Tab



Application Multi-pass orbital GTAW pipe-to-pipe, pipe-to-fitting
Cable length 7.6 m (25’) standard. Extension cables available
Pipe (tube) size range 168 – 1524 mm (6 - 60?) and larger
Filler wire module Wire size
Max. speed capability
Spool size
Wire size: 0.8, 0.9, 1.0, 1.2 mm (.030?, .035?, .040?, .045?)
2540 mm/min. (100 IPM)
1 kg (2 lbs) standard
Oscillation module Max. oscillation stroke amplitude
Max. oscillation speed
Oscillation dwell
Cross seam adjustment
16 mm (0.6725?)
1520 mm/min. (60 IPM)
0 – 1 second
± 6.4 mm (0.25?) fine adjustment
± 38 mm (1.5?) course adjustment
Arc gap control module 13 mm (0.5?) stroke. Additional mechanical adjustment allows welding heavier wall pipe
Torch propulsion module 250 mm/min. (10 IPM) maximum rotation speed

Water-cooled torch

300 A continuous
Torch adjustment capability Torch lead/lag adjustment
Torch tilt adjustment
± 15 degrees (manual)
± 10 degrees (manual)
Power supply compatibility Pipemaster 515, Pipemaster 516
Weight 11.8 kg (26 lbs.) Single wire feeder without wire spool
13.4 kg (29.5 lbs.) Dual wire feeders without wire spools
Axial clearance Torch C/L to Rear Extremity: 4950 mm (19.5?)
Torch C/L to Front Extremity: 290 mm (1.1?)
Radial clearance 250 mm (9.8?)