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Reduce Field Storage Tank Welding Time by 40%


Bug-O Systems offers Automatic Girth Welders for tank fabrication applications. They are convertible for both bottom up and top down construction. Bug-O Girth Welders are also capable of being used as a pair to construct a dual sided girth welder. Special models can be built per customer’s request.

Unlike other girth welders on the market, the BGW (Bug-O Girth Welder) Series comes standard with a Dual Drive System and other features unique to our machines. This self-propelled submerged arc welding system can reduce field storage tank welding time by 40% by increasing arc on time and reducing weld defects. The models run directly on the tank and carry the operator, eliminating the need for scaffolding while ensuring operator comfort and safety. The Girth Welders, due to their modular design, are applicable for top down or bottom up constructed single or double wall storage tanks. They are designed for internal and external welding. There are four standard units and our design allows us to offer custom-built units for special applications.


  • Dual drive motor system
  • Efficient flux recovery system
  • Integrated control panel
  • Laser site guide
  • Ergonomic operator cabin
  • Adjustable weld head and flux belt support system