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 University of Notingham
© 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

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