Girth and Vertical Welders

Bug-O Automatic Circle Burners cut square or beveled holes in lightweight pipe or vessels. Our Automatic Circle Welders are designed for single or multipass welding of couplings or nozzles on pipe and vessels. No hose or cable wrap up regardless of direction of rotation.

Single Sided (bottom-up) Horizontal Girth Welder

The Single Sided (bottom-up) Horizontal Girth Welder is a self-propelled submerged arc welding system applicable for bottom-up constructed single wall storage tanks. 

Brochure Manuals

Single Sided (top-down) Horizontal Girth Welder

The Single Sided (top-down) Horizontal Girth Welder is a self-propelled submerged arc welding system applicable for bottom-up constructed single wall storage tanks.

Brochure Manual

Double Sided Horizontal Girth Welders

The Double Sided Horizontal Girth Welder is a self-propelled submerged arc welding system applicable for bottom-up constructed single wall storage tanks.

Brochure Manual

Double Shell Storage Tank Girth Welders

The Double Shell Storage Tank Girth Welder is a self-propelled submerged arc welding system applicable for bottom-up constructed double wall storage tanks for both inside and outside welding.

Brochure Manuals

Vertical Girth Welders

The Vertical Welder is designed for welding the vertical seams on field storage tanks in an enclosed environment. The frame of the Vertical Welder is covered by Aluminum panels to provide a weather tight seal. With the motorized drives and permanently mounted rails, setup time and cost is reduced between the vertical weld seams. This unit is designed to run on any wire feeder/welding power supply combination. A powered elevating platform allows the operator to follow the Bug-o drive carriage up the seam.

Brochure Manual

Mini Portable Compact Girth Welders

The Mini Portable Automatic Girth Welder produces 2G horizontal sub-arc welds. It runs on a steel band support, located anywhere on the work piece.

Brochure Manual Video
play

Zipper Welder

The Bug-O Zipper Welder is designed to weld vertical seams on field storage tanks. The system is composed of two standard components: box rail assembly with carriage and the Modular Drive tractor. The box rail assembly with carriage hangs over the top lip of the course section. It can be rolled into position and is held there by powerful on/off magnets. There are box rails available for 8' seams and 10' seams. The Zipper Welder utilizes the Modular Drive tractor and offers systems setup with a pendulum or linear weavers. There is also an optional Automatic Torch Height Control System available for each unit.

The BUG-5890 Zipper Welder with Linear Weaver provides linear weave motion, producing welds from 1/8" to 2" (3-50mm) wide.

The BUG-5880 Zipper Welder with Pendulum Weaver provides pendulum weaving motion.

Brochure