Submerged arc welding is how USA Weld Express welds long seams and heavy weldments productively. For tank shells, vessels, and long structural joints, this automated process delivers deep, consistent, high-quality welds at high deposition rates.
What Is Submerged Arc Welding?
Submerged arc welding (SAW) is a mechanized process in which a continuously fed wire electrode runs beneath a blanket of granular flux that covers the arc. The flux shields and insulates the weld, allowing very high current, deep penetration, and high deposition rates with almost no spatter or visible arc. Because SAW is automated and the arc is submerged, it produces exceptionally clean, uniform welds over long distances — making it the standard for long seams on tanks, pressure vessels, and heavy structural weldments.
Ideal for Long Seams
SAW is built for length. On tank shells, vessel bodies, and long structural joints, its mechanized travel keeps the weld uniform from one end to the other, something manual welding struggles to match over distance. The high deposition rate fills long seams quickly, so a rolled shell course or a long plate joint is welded soundly and efficiently. For any assembly dominated by long, continuous welds, SAW is the productive, high-quality answer.
Deep Penetration & High Deposition
The high current SAW allows drives deep penetration, producing strong welds on heavy sections, while the high deposition rate lays down a lot of weld metal fast. Together they make SAW both strong and productive on thick material and long joints. That efficiency shortens weld time on heavy tank and vessel work, controlling cost and schedule without giving up the weld quality these applications demand.
Consistent, Clean Quality
Because the process is mechanized and the arc is shielded under flux, SAW welds are remarkably consistent and clean, with minimal spatter and a smooth profile. That uniformity matters on pressure-containing shells and inspected seams, where consistent penetration and a sound weld are required throughout. We can pair SAW seams with non-destructive testing and documented quality control for projects with code and inspection requirements.
Paired with Rolling & Vessel Fabrication
SAW connects directly to our plate rolling and tank and vessel work. A plate is rolled into a shell, and the long seam is closed with submerged arc welding — all in-house, on one schedule. That integration makes tank and vessel fabrication efficient, keeping rolled shells and long seams moving from forming through welding with one accountable team.
Why Choose USA Weld Express
With 17 years of fabrication experience and full in-house rolling and vessel capability, USA Weld Express delivers submerged arc welding for productive, high-quality long-seam work. Welding in-house alongside forming and fabrication means shorter lead times and a single point of accountability. When your project needs deep, consistent welds on tanks, vessels, or heavy weldments, delivered on schedule and priced right, our SAW service keeps it moving.