Rotoweld 3.0
Twin Bay / HD

The road ends here. This is the highest tonnage you’ll get from an automated spool welding cell

The Rotoweld 3.0 Twin Bay HD has been designed for large projects like LNG plants and refineries that need to be built in record time. 

3 in. to 48 in.

diameter capacity

20,000 lbs.

pipe stands capacity

300+ dia inch

daily productivity capacity

Welding torches and wire feeder

  • Designed with 2 welding torches: one to perform open-root-pass butt welds and the other for filling passes
  • Each torch has its own wire spools. Root pass is done in GMAW choices for fill passes: GMAW, FCAW, MCAW, SAW.
  • Separate gas shielding system for each torch
  • Robotized torch welding arm for fast and repeatable torch positioning on selected pipe diameter
  • Torches can be easily switched — FCAW and SAW are both standard in the Rotoweld 3.0 HD model.

Robotic welding arm

  • Self-positioning of the arm in welding position in just a few seconds with no human manipulation
  • Welding vision system controls the puddle penetration and adapts welding parameters in real time
  • Embedded LED lighting allows the welder to easily align the torch in the bevel before starting to weld.

Proprietary designed rail system

  • Rails are the backbone of the Rotoweld 3.0 and can be level with any shop floor conditions
  • Rails are factory pre-assembled and pre-aligned for maximum on-site precision
  • Seamless integration; no wires lying on the ground.
  • Welding station and optional fume extractor travel on the rails to desired position simply by using the joystick
  • Twin Bay comes with 5 rails for a total length of 80 ft. (24.4 m).

Heavy-duty pipe stands

  • 4 pipe stands that can be moved quickly and easily on the rail while staying aligned with the rotator to guarantee perfect positioning
  • A hand pump connected to the hydraulic cylinder levels the pipe section easily, efficiently and safely
  • Heavy-duty steel idler rolls allow the pipe to turn freely. Optional rubber idler rolls for stainless steel application.
  • Recovery bins designed for easier flux recovery and fast positioning under the joint
  • Diameter range: 3 in. to 48 in. / 75 mm to 1,219 mm
  • Load capacity: 20,000 lbs. / 9,072 kg

High-torque rotators

  • Minimal set-up time required due to its self-aligned design
  • Diameter capacity: 3 in. to 48 in. / 75 mm to 1 ,219 mm
  • Centre line clearance to ground: 71 in. / 1,803 mm
  • Operation speed range: 0.2 to 1.9 rpm
  • Load capacity: 3,000 lbs. / 1,360 kg
  • Maximum torque: 50,000 lbs.-in. / 5,649 n-m
  • Optional stainless steel grippers.

User Interface features:

  • UI entirely browsable with the Rotoweld pendant
  • Large centred image of the torch in the bevel (arc-off) and the weld puddle (arc-on)
  • User and Engineering modes easily toggled with the engineering lock key
  • Welding program visible at all times with a live cursor that indicates the progression of the weld
  • Expandable menus to enter key information
  • Welding information display.


Gives you:

  • An overview of your productivity for a period of time that can be filtered by welder, welding programs and job number
  • A daily report in a chart that contrasts the arc-on time, the complete procedure and interruption
  • Details on each joint:
    • Displays the welding parameters used for all passes as a function of degrees of rotation
    • Displays the complete welding program that was loaded for this joint.
    • Records a live video of each pass, pushing the limits of investigating welding practices or a joint preparation
    • Displays the temperature measurements and waiting times between passes for temperature-sensitive material.

Available options

Discover how quick and easy it is to get your Rotoweld

1. Get a quote

Let our specialist  find the right models to suit  your production flow and specific needs. In less than a week you’ll have all you need to make your purchase decision.

2. Fabrication

The Tecnar factory releases a new Rotoweld every  3 weeks. Based on demand, the average delivery time is between 3 and 9 weeks. Be sure to get in line.

3. Installation and training

A Rotoweld specialist will complete the installation in 2 days  and train your entire team for 3 days so you can  optimize the performance of your Rotoweld.

Technical specifications - Rotoweld 3.0 Twin Bay / HD



Carbon steel (including A333 Gr. 6)

Stainless steel (304,316 and similar

Cr-Mo steel alloys

Duplex stainless steel

Welding processes

Root pass

GMAW (short circuit)

Fill pass

GMAW (spray or pulsed transfer)
SAW (submerged arc)

Fill pass option

FCAW (flux core)


Diameter capacity

75 mm to 1,219 mm

3 in. to 48 in.

Centre line clearance to ground

1,803 mm

71 in.

Operation speed range

0,2 à 1,9 rpm

0,2 à 1,9 rpm

Maximum torque

5,649 n-m

50,000 lbs.-in.

Load capacity

1 360 kg

3 000 lb.

Pipe stands load capacity

9,072 kg

20,000 lbs.



2.3 m

7.5 ft.


3.5 m

11.5 ft.


19.5 or 24.4 m

64 ft. or 80 ft.

Welding source

Root pass - STT

Lincoln Power Wave® S500

Fill Pass - GMAW

Lincoln Power Wave® S500

Fill Pass - SAW

Lincoln Flextec 650

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