Automatic Girth Welder (AGW) is a self-propelled frame with variable speed that applies efficient circumferential Submerged Arc Welding (SAW) on Field Erected Tanks (Vertical Tanks). SAW is primarily used on carbon steels, stainless steels, and certain nickel alloys, enhancing productivity and consistently producing high-quality welds. The AGW reduces the manual welding process up to 25 times. The AGW comes with a Power Source, Welding Head, Welding Controller, Flux Belt and Flux Recovery System. Girth Welders are also known as 3 O'Clock Welder, Automatic Girth Welder, AGW Welding, Automatic Tank Welder and Soldadura Arco Sumergido.
| Models | 3D |
| AGW-1 | 3D |
| AGW-1-C | 3D |
| AGW-2 | 3D |
| Shell Buggy | 3D |
| SAW Tractor | NA |
| FCAW Tractor | NA |
Quality/Features:
- Irizar AGW-Fixture: Designed and Engineered in Canada
- Welding Equipment: Lincoln Electric Company; made in the USA
- Assembled 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
Applications:
Girth Welder Model AGW-1 (Single Side)
Compatible with Traditional Construction Method (Bottom to Top). Apply SINGLE circumferential SAW (Submerged Arc Welding) seams INSIDE or OUTSIDE the tank. It hangs on the tank’s upper edge.
Compatible with Tank Jacking Construction Method (Top to Bottom). Apply circumferential SAW (Submerged Arc Welding) seams ONLY from the OUTSIDE of the tank. It drives on a temporary rail (see sketch below). For welding circumferential seams from the INSIDE of the tank, use a Girth Welder Model AGW-1-C.
Girth Welder Model AGW-1-C (Single Side - Compact)
Compatible with Tank Jacking Construction Method (Top to Bottom). Apply SINGLE circumferential SAW (Submerged Arc Welding) seams ONLY from the OUTSIDE of the tank. It drives on a 1/2” x 4” flat bar hanging on brackets (see sketch below). The unit can be used on LNG tanks, fitting 750 mm of space between the inner and outer tanks.
Girth Welder Model AGW-2 (Double Side)
Compatible with Traditional Construction Method (Bottom to Top). Apply DOUBLE circumferential SAW (Submerged Arc Welding) seams INSIDE and OUTSIDE simultaneously. It hangs on the tank’s upper edge.
Shell Buggy
It is a self-propelled basket that provides quick access to both vertical and horizontal welding seams without the need for scaffolding. It helps install a vertical up FCAW Welding Oscillator Tractor. It also provides quick access for welding inspections and repairs, as well as installing and removing tank fittings tools. The Shell Buggy is compatible with both the Traditional Construction Method (from bottom to Top) and the Tank Jacking Construction Method (from Top to bottom).
SAW Welding Tractor
It is a self-propelled Tractor. Apply SAW Butt/Fillet welds on the Tank’s Floor and/or circumferential Fillet welds on Annular-Plate to Tank-Shell Bottom, both inside/outside the tank.
FCAW Welding Oscillator Tractor Model 3000
Apply Flux Cored Arc Welding on vertical welding seams up to 3,000 mm and circumferential seams on pipes with diameters ≥ 1,200 mm. It is recommended to use Shell Buggy for quick access on vertical seams outside the tank.
Delivery Time: In stock
Within Canada: Three to five business days
USA & US-Mexican border: One week
Latino America: Four weeks
World-Wide: Five to six weeks