High-speed, automated submerged-arc welding for long straight and spiral seams — producing sound, uniform, corrosion-resistant welds with deep penetration.
Spiral arc welding, also known as spiral submerged-arc welding, submerges the weld joint under a bed of fusible flux that becomes electrically conductive when heated by the arc. That submerged environment shields the puddle completely, producing welds that are sound, uniform, and corrosion-resistant, with deep weld penetration.
As a high-speed, fully automated process, spiral arc welding is especially effective on long straight welds and thin sheet metal, where consistent travel speed and heat input matter as much as weld strength. We qualify the process across carbon steel, stainless steel, and high-performance nickel alloys.
An automated, flux-submerged process built for long, consistent seams.
A layer of fusible flux is laid over the joint ahead of the welding head.
The arc is struck beneath the flux bed, fully submerging the weld zone.
A continuous electrode feeds into the submerged arc, sustaining the weld pool.
Heat from the arc renders the flux conductive, shielding and refining the weld.
The joint solidifies beneath the flux crust, protected from atmospheric contamination.
Unfused flux is recovered and reconditioned for the next pass.
Automated hardware built for long, high-speed production seams.
Automated welding head delivering continuous wire beneath the flux bed.
Applies and recovers granular flux ahead of and behind the weld head.
Sustains uninterrupted electrode feed for long production seams.
Precision travel control for spiral and straight-seam geometries.
Reservoir and metering for consistent flux coverage.
Keeps the welding head aligned to the joint across long travel distances.
High-speed spiral and longitudinal seam welding on line pipe production.
Uniform, corrosion-resistant seams on vessels and storage tanks.
Long-seam welding for enclosures across marine and power generation projects.