Otto Arc Systems, Inc. Tube to Tube Sheet Weld Heads


TSWH-1.25

Tube to Tube Sheet Weld Heads TSWH-1.25

Technical Specs (pdf)

THE TSWH-1.25 tube to tube sheet weld head is designed for TIG welding small tube to tube sheet, suitable for carbon and stainless steel. It can also be used for recessed, projected and flush tubing, with or without wire feed.

  • High precision with fast and accurate performance, suitable for small heat exchanger
  • Auto AVC control with on and off function for manual adjustments
  • Water cooled TIG weld head, easy to change or adjust Tungsten
  • No twist wire and special wire feeding design for accurate/repeatable single and multi pass welds
  • Integrated wire feed for recessed, projected or flush tube ends
  • Uses localized guide for self-centering of welds 1"OD and under, the manipulator is recommended
  • Expandable mandrels to be used with optional spring balancer for welds 1"OD or larger
  • Buttons on handle, simple to operate
TSWH-1.25
Diameter Range mm (inches) 8-32mm (.375" - 1.25")
Rotation Speed (rpm) 0.37 - 7.39rpm
Arc Adjusting Distance 18 mm (0.71")
Weight 11 kg (24 lbs) without cable
Standard Cable Length 12m (40')
Tungsten Diameter 2.4mm (3/32")
Max wire feeding speed 1800mm (5.8')
Wire Diameter 0.8mm, 0.9mm, 1.0mm
(0.030", 0.035", 0.040")
Cooling Water
Cooling flow (ml/min) ≥600 / ≥1.26 gal
Protective Gas Ar / Mixed Gas
Duty Cycle 300A at 60%
Dimensions (mm) 550 x 290 x 510mm (21" x 11" x 20")

TSWH-1.5

Tube to Tube Sheet Weld Heads TSWH-1.5

Technical Specs (pdf)

Designed for TIG welds for tube to tube sheet carbon and stainless steel. Mainly used for flush tube connections that require no wire feed.

  • Tube to tube sheet welding without filler wire
  • Commonly used for stainless steel, titanium and nickel alloy tube to tube sheet welding
  • Small, light and simple operation
  • Uses localized guide for self-centering with optional spring balancer
  • Expandable centering mandrel designed for precise positioning
  • Enhanced water cooling system and high duty cycle for durability
TSWH-1.5
Diameter Range mm (inches) 16 - 38mm (.63" - 1.5")
Rotation Speed (rpm) 0.6 - 12rpm
Weight 3.5 kg (8 lbs)
Cooling Water
Protective Gas Ar / Mixed Gas
Standard Cable Length 12m (40')
Joint Type Flush
Tungsten Diameter 2.4mm (3/32")
Welding Degree 0° - 7°
Duty Cycle 100A at 70%
Dimensions (mm) 310 x 80 x 165mm (12" x 3.15" x 6.5")

TSWH-3

Tube to Tube Sheet Weld Heads TSWH-3

Technical Specs (pdf)

The TSWH-3 tube to tube sheet weld head is designed for TIG welding tube to tube sheet, suitable for carbon and stainless steel. It can also be used for recessed, projected and flush tubing with or without wire feed. We recommend for pipe with an OD of less than 1.25" with manipulator/balancer. For pipe with OD more than 1.25" the self centering mandrel is used with our optional spring balancer.

  • With/without wire feeding TIG DC/pulse welding
  • Continous rotation weld head with no cable twist
  • Suitable for Tungsten electrodes 1/16 up to 1/8
  • Expandable pneumatic mandrel for easy positioning
  • Easily connects to the balancer
  • Suitable for tube to tube sheet welding (boiler industry)
  • Compatible with manipulator - useful within the heat exchange industry
  • Material types - carbon and stainless steel, and other alloys
  • For flush tube, recessed (1 mm max.) and projected (not over 5mm)tube ends
  • Arc voltage control (AVC) for consistent torch height
TSWH-3
Diameter Range mm (inches) 16 - 60mm expandable to 80mm
(.630" - 2.36" expandable to 3.15")
Rotation Speed (rpm) 0.37 - 7.39rpm
Arc Voltage Adjusting Distance 20 mm (0.79")
Welding Torch Angle 0° - 30°
Standard Cable Length 5m (16')
Welding Current/Duty Cycle 300A at 70%
Protective Gas Ar / Mixed Gas
Wire Feeding Speed 2200mm/min (86.6"/min)
Wire Diameter 0.8mm, 0.9mm, 1.0mm
(0.030", 0.035", 0.040")
Cooling Water
Joint Type Flush, projected, or recessed
Weight 13 kg (28 lbs)
Dimensions (mm) 550 x 290 x 510mm (22" x 11.4" x 20")

TSWH-i-75 (Inner)

TSWH-i-75 (Inner)

Technical Specs (pdf)

The TSWH-i-75 tube to tube sheet weld head is designed for inner tube to tube sheet TIG welding and is suitable for carbon and stainless steel without wire feed.

  • Commonly used on heat exchangers, inner tube to tube sheet welding
  • Minimum inner tube diameter of 19mm (.75 inches)
  • Precise positioning and accurate/repeatability welding
  • Suitable for carbon and stainless steel
  • Can customize according to specific requirements
TSWH-i-75
Tube OD ≥19mm (.75")
Depth for Inner Tube 20 - 120mm (.75" - 4.75")
Tube Thickness 1 - 2.5mm (0.040" - 0.1")
Connection Tube insert, flush tube
Rotation Speed (rpm) 0.37 - 7.39rpm
Tungsten Diameter 2.4mm (0.095")
Arc Adjusting Distance 15 mm (0.59")
Protective Gas Ar / Mixed Gas
Weight 11 kg (24 lbs)
Cooling Flow ≥600mL
Cooling Water
Standard Cable Length 5m (16')
Dimensions (mm) 550 x 290 x 510mm (22" x 11.4" x 20")

TSWH-i-1 (with Wire Feed)

TSWH-i-1 (with Wire Feed)

Technical Specs (pdf)

This welding head is also designed for inner tube to tube sheet TIG welding with integrated wire feeder.

  • Inner-hole with integrated wire feed
  • No wire twisting with special wire feed design
  • Minimum inner tube diameter of 25mm (1 inch)
  • Acheives complex single and multi layer welds
  • Can customize according to specific requirements
  • Special water cooling feature (cools to the end of torch, near the Tungsten)
TSWH-i-1
Tube OD ≥25mm (1")
Depth for Inner Tube 20 - 80mm (.75" - 3")
Connection Tube insert, flush tube
Tungsten Diameter 2.4mm (3/32")
Rotation Speed (rpm) 0.37 - 7.39rpm
Arc Adjusting Distance 15 mm (0.59")
Max Wire Feed Speed 1800 mm/min (5.83'/min)
Protective Gas Ar / Mixed Gas
Weight 12 kg (26 lbs)
Cooling Flow ≥600mL
Cooling Water
Standard Cable Length 5m (16')

TSWH-HB-625 (Headerbox)

TSWH-HB-625 (Headerbox)

Technical Specs (pdf)

This weld head is designed for deep hole tube to tube sheet TIG welding. It is suitable for carbon steel, stainless steel and most TIG type materials.

  • Commonly used for special heat exchanger needs within the chemical industry (for example: air-cooled hydrogenation)
  • Perfect for wire feed welds in hard to reach areas
  • Narrow space welds reaching 4.75" to 8.5" (4.75" to 8.5" is the min. and max. distance between the two tube plates)
  • Can customize according to specific requirements
  • Torch angle negative 3 degrees
  • Optional external or integrated wire feed available
TSWH-HB-625
Tube OD 25 - 32mm (1" - 1.25")
Depth for Inner Tube 230mm (9") Including plate thickness
Connection Flush tube
Rotation Speed (rpm) 0.37 - 7.39rpm
Tungsten Diameter 2.4mm (0.095")
Torch Angle -3°
Arc Adjusting Distance 18 mm (0.80")
Protective Gas Ar / Mixed Gas
Weight 13 kg (28 lbs)
Cooling Flow ≥600mL
Cooling Water
Duty Cycle 200A at 60%
Standard Cable Length 5m (16')

TSWH-MGH-3 (GMAW (MIG/MAG) Weld Head)

TSWH-MGH-3 (GMAW (MIG/MAG) Weld Head)

Technical Specs (pdf)

Designed for automatic MAG tube to tube sheet welding and utilizes a fixed localizer. This weld head can be used with our optional spring balancer; allowing for a wide range of welds.

  • Suitable for sleeve, boiler tube to tube sheet and boiler bar MAG welding
  • Accurate and repeatable multi pass welds
  • 15-20kg wire feeding plate (33-44 lbs)
TSWH-MGH-3
Diameter Rangew mm (inches) 38 - 260 mm (1.5" - 10.25")
Rotation Speed (rpm) 0.23 - 4.6 rpm
Torch Angle 0-60°
Protective Gas Ar / Mixed Gas
Cooling Water
Cooling Flow ≥600mL/min
Duty Cycle 320A at 60%
OSC Width 40mm (1.5")
Manual Adjusting Height (up and down) 40mm (1.5")
Wire Diameter 1.0mm, 1.2mm (0.039", 0.047")
Weight 15 kg (33 lbs)
Standard Cable Length 12m (40')
Dimensions (mm) 550 x 290 x 510mm (22" x 11.4" x 20")