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Submerged Arc Welding (SAW) Services

When strength, efficiency, and impeccable quality are critical, Fitchburg Welding Company can tackle even your toughest challenges with submerged arc welding (SAW).

This powerhouse technique is suitable for heavy gauges that require deep penetration, making it ideal for large-scale projects such as structural work and pipe building. SAW can be used on metals including stainless steel, carbon steel, low-alloy steels, and nickel-based alloys.

SAW is also highly efficient, as the entire process may be semi-automated or fully automated for maximum speed and consistency. Minimal edge preparation is needed, and deep welds can be achieved in a single pass. As with flux-cored arc welding, high metal deposition rates are possible with SAW, which may significantly reduce welding time as well as project costs.

The Submerged Arc Welding Process

A variety of electrode types can be used in the submerged arc welding procedure. This method uses a hopper to feed in granular flux before the arc advances to the workpiece. The entire weld zone becomes covered (or “submerged”) under the flux blanket, providing protection from atmospheric contaminants; no external gas shielding is needed. The flux covering also prevents splatter, helping to produce cleaner, smoother welds.

Throughout the process, an expert submerged arc welder will control the heat input with precision to ensure minimal warping and residual stress, even in the largest workpieces.

The process quickly produces strong, sound welds. Finishing operations can then be performed to remove any remaining protective slag.

Our Submerged Arc Welding Equipment

Fitchburg’s in-house submerged arc welding equipment allows us to handle jobs of all sizes, scale, and specifications, including the long, straight welds typical of SAW as well as circumferential welds.

Our lineup includes machines from Lincoln Electric, Miller, Cobramatic, and Hobart:

  • Weld positioners with adjustable height, 135° tilt, 360° rotation, and capacity up to 350,000 lbs.
  • 60,000 lb. turning roll
  • 40,000 lb. turntables
  • Fully automatic 3-axis manipulator / welding cell
  • 60″ x 60″ welding manipulator

A One-Stop Shop for Industrial Welding Services

At Fitchburg Welding, submerged arc welding is only one of our comprehensive capabilities. Before welding, we cut and bevel your material and assemble all parts. After welding, we perform stress relief treatments to produce stronger joints, and magnetic particle testing and other nondestructive testing methods are used to ensure welds are free of internal voids. Shotblasting is used to remove rust and prep the surface for painting, and finally, we apply paint or coatings to your specifications. Fitchburg Welding is ISO 9001 certified for welding and fabrication services.