Resistance Welding

Large volume, small footprint

Resistance welding joins materials using pressure and an electric current. This eliminates the need for consumable metals and shielding gasses, making this manufacturing process highly efficient and environmentally-friendly.

Our facility is equipped with industry-leading, American-made machinery, enabling our technicians to deliver high-quality resistance spot welds of 1/8” steel to 1/8” steel, and 1/16” aluminum.

How Does Resistance Spot Welding Work?

Resistance Spot Welding utilizes copper alloy electrodes carrying an electric current. The electrodes make contact with two (or more) sheets of metal, which are held together under pressure. The heat that is generated melts the material, and the current is shut off. Pressure is maintained while the weld pool solidifies, forming the weld nugget and joining the two materials. Spot Welding is used by the automotive industry, and can be applied to aerospace, defense, and medical devices as well.


How Does Resistance Seam Welding Work?

Seam welding is a variant of the basic resistance spot welding process. In seam welding a series of overlapping nuggets is produced, usually by replacing the conventional spot-welding electrodes by wheels that turn as the parts to be welded are fed between them. The process thus produces a continuous leak tight seam. Seam welding is also used by the same industries as spot welding!

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  • Aerospace
  • Automotive
  • Firearms
  • National Defense


  • Speed: Resistance welding is a fast process. It can join materials quickly, making it suitable for high-volume production lines.
  • No additional materials required: Unlike some welding methods that require filler materials, resistance welding joins materials directly without the need for additional consumables, reducing material costs.
  • Consistency: Resistance welding provides consistent and repeatable results, ensuring uniform weld quality across production runs. This reliability is crucial for maintaining product integrity and meeting quality standards.
  • Clean process: Since this process doesn't involve fluxes, gases, or filler materials, it produces clean welds without the need for extensive post-weld cleaning or treatment.
  • Environmentally friendly: With no emissions of harmful gases or fumes during the welding process, this process is environmentally friendly compared to some other welding methods.
  • Versatility: Resistance welding can be used to join a wide range of materials, including metals and alloys, as well as dissimilar materials, providing versatility in manufacturing applications.
  • Automation compatibility: This process can be easily automated, integrating seamlessly into robotic assembly lines, which enhances productivity and reduces labor costs.


Joining Technologies’ state-of-the-art services include precision laser welding, electron beam (EB) and gas tungsten arc welding (GTAW), machine shop services and supply chain management. All along the way, our quality control system will be an integral part of your project’s life journey at Joining Technologies.