What Is Seam Welding?

Are you looking for an effective way of joining different pieces of metal? You might have heard about seam welding and its immense potential.

Seam welding is a process that involves generating heat and pressure to the workpiece to join them together. It’s a widely used and economical technique among manufacturers and welders. According to estimates, around 80-90% of all automotive body components are manufactured by seam welding.

This clearly highlights its importance in the industry. Therefore, if you are keen to learn about this technique, then this article is for you! We will discuss in detail what is seam welding, its advantages, types and applications.

What is Seam Welding?

Seam welding is a welding process used for joining two or more sheets of metals or other materials.

It is accomplished by the use of a powered roller that passes over the weld joint and creates a continuous, strong, and flat weld. Seam welding is a form of resistance welding and is well suited for applications that require high quality, strong welding joints.

Benefits of Seam Welding

  • Strong and reliable weld joints
  • High quality of welding
  • Suitable for welding thin sheets and thick plates
  • No expensive materials needed
  • Little to no clean-up required
  • Low heat input

Applications of Seam Welding

Seam welding is used in many industries due to its high quality and strong weld joints.

Some of the industries and applications where seam welding is used are:

  • Automotive – primarily used for body-in-white build up
  • Aerospace – used for aircraft structures and components
  • Electronics – used for the manufacture and assembly of printed circuit boards
  • Medical and surgical equipment – used for stainless steel parts
  • Consumer goods – used for manufacturing products such as enamel cookware

Process of Seam Welding

The seam welding process is similar to spot welding and is often used in the same kind of manufacturing process. The two materials to be welded are clamped together and then electrodes are pressed down on them, creating an electrical circuit. The current passed through the circuit creates heat and pressure to join the two pieces.

The process may be either continuous or intermittent. In continuous welding, the electrode rolls over the joint, creating heat and pressure that welds the pieces of metal together as it moves along.

In intermittent welding, the electrode stops at regular intervals to weld the pieces together.


Seam welding is a highly effective welding process used to join two or more sheets of metals or other materials. The process is ideal for high-quality welding applications, such as in the automotive, aerospace, electronics, and medical equipment industries.

Seam welding is a form of resistance welding and is simple to set up and use. Citation URLs:https://www.

lincolnelectric. com/en-ca/welding-how-to/articles/all-articles/what-is-seam-welding/https://thomasnet. com/articles/welding/seam-welding/

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