our sensors, your productivity.

The Rotoweld has been automating pipe spool prefabrication around the world for 30 years.

Long pulsed laser-ultrasonic detection laser
Tecnar develops, manufactures and markets advanced sensors to optimize industrial processes.
© Courtesy of Oerlikon Mecto (US) Inc
© Courtesy of NRC Canada
References & Cases studies

We’ve had Rotowelds in our Lebanon plant for over 15 years…These machines quickly became a vital part of our production operations…Through the years, the Tecnar team delivered excellent response, service and parts delivery and replacement…We purchased Tecnar’s latest Rotoweld model, the 3.0. It is a giant leap forward for technical advancement, functionality, performance and up-time. It’s been running for over a year now—absolutely trouble-free. Everything was re-engineered, streamlined and, unlike some of the newer technologies, technically intuitive…The new robot manipulator, standard Siemens controls and “off-the-shelf” hardware place the Tecnar Rotoweld exponentially ahead of all their competitors. Tecnar is more than a quality vendor and supplier—they are a direct part of our Perma-Pipe team!

Gary Renfro
Facilities Director and Chief Engineer
Perma-Pipe Inc.

Atlantic Construction
Brent Gedak Welding
Calefaccion Y Ventilation S.A. De C.V.
Dearing Compressor & Pump
Epsilon Industries
Glenfield Engineering
Preferred Energy
PWC Industries
US Engineering Company
The Rotoweld 3.0 twin configurations include two separate work bays and rotators to maximize the work cell’s throughput by allowing one work bay to be re-loaded while welding in the alternate one. The motorized welding carriage travels between work bays along a continuous track system, which also guides the idler rolls to maintain perfect alignment along the full length of the machine.

Rotoweld 3.0 technical specifications

  • Average welding time

    • One dia-inch per minute
      Example: 8 minutes for an 8 inches standard wall pipe
  • Materials

    • 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 transfer)

      FCAW (flux core)

      SAW (submerged arc)

  • Rotator

    • Diameter capacity

      75 mm to 1 065 mm
      3 in. to 42 in.

    • Center line clearance to ground

      1 605 mm / 65 in

    • Operation speed range

      0.2 to 2 rpm

    • Load capacity

      1 360 kg / 3 000 lb

    • Maximum torque

      3 955 N-m / 35 000 lb-in

  • Idler roll load capacity

    • 4 535 kg / 10 000 lb
  • Dimensions

    • Width

      2.3 m / 7.5 ft

    • Height

      2.7 m / 8.8 ft

    • Shortest configuration length

      9.2 m / 30 ft

    • Longest configuration length

      23.8 m / 77 ft