Submerged Arc Welding (SAW) is a high-productivity arc welding process in which the arc and molten weld pool are completely covered by a layer of granular flux. This flux blanket shields the weld from atmospheric contamination, suppresses spatter, and helps form a smooth, uniform weld bead with excellent penetration.
In SAW, a continuously fed wire electrode creates an arc beneath the flux layer, allowing deep fusion and high deposition rates. Because the arc is hidden, the process produces minimal visible radiation and fumes, improving operator comfort and safety. SAW is typically performed in flat or horizontal positions and is well suited for long, straight welds on thick plates.
The process is widely used in heavy fabrication such as pressure vessels, pipelines, shipbuilding, structural beams, and storage tanks. Its ability to deliver consistent, high-quality welds with minimal defects makes it ideal for large-scale industrial applications. SAW also adapts easily to automation, increasing speed and repeatability in production environments.
With excellent weld strength, smooth finish, and efficient material usage, Submerged Arc Welding provides a reliable solution for joining thick steel sections where productivity and durability are essential.