Girth Welder also know as 3 O'Clock Welder, Automatic Girth Welder, AGW Welding, Automatic Tank Welder and Soldadura Arco Sumergido

The AGW is a self-propelled frame designed to apply efficient horizontal seam welds by means of the Submerge Arc Welding (SAW) Process. Compare with conventional techniques, the AGW reduces the construction rate 25 times and cuts welding time by 2. 

3D Models:

3D Model AGW-2



  • Irizar AGW-Fixture: Designed and Engineered in Canada
  • Welding Equipment: Lincoln Electric Company; made in the USA 
  • Assemble and Tested in Canada 
  • Control Box: Forward/Stop/Reverse & Digital display with variable speed
  • Flux recovery: On/Off
  • Emergency Stop
  • Motors and Control Box with IP 54 protection against dust and heavy rain 
  • Frequency drive made by TECO Westinghouse or Panasonic 


  • AGW-1: It is compatible with Traditional Tank Construction Method driving hanged on the upper edge of the tank. It is also compatible with Tank Jacking Methoed driving at ground level on a rail outside and around the tank. Conversion time takes about two hours.
  • For LNG Double Wall Tank built with Traditional Methoed use LNG AGW-1. This unit fits on 1.0 m space between inner & outer tanks.
  • For LNG built with Jacks select the AGW-1-C. This unit apply welding inside and outside the tank; fits on 850 mm space driving on a flat bar of 1/2 inch thickness x 4 inch width hanged on bracket support. 



1512 Adamson View
Edmonton, Alberta
T6W 0V4, Canada
Phone: 1 780 450 6695
Fax: 1 780 485 6677

464014 Range Road 235
County of Wetaskiwin
Alberta T0C 1Z0, Canada


WhatsApp English/Spanish
1 780 709 2333 (Sales)
1 780 807 5785 (Tech Support)
1 587 501 1730 (Parts)