What Is Sub Arc Welding?

Have you ever considered the importance of Sub Arc Welding? This welding procedure has been a game-changer across multiple industries. It offers cost-effective solutions and makes the process of welding easier and faster.

With Sub Arc Welding, manufacturers have cut costs and increased the efficiency of their production line by up to 40%. Moreover, Sub Arc Welding requires fewer consumables than manual welding and offers excellent weldability and mechanization.

But what is Sub Arc Welding and how does it work? That’s exactly what this article is about. We’ll explore the fundamentals of Sub Arc Welding, its benefits, and applications.

We’ll also provide you with statistical data such as the facts that Sub Arc Welding equipment is designed for welding thicknesses from 5mm to 500mm, and that it can be used to weld materials such as carbon steel and stainless steel. So, let’s get started and discover why Sub Arc Welding is making a impact in the manufacturing and fabrication industry today!

What Is Sub Arc Welding?

Sub arc welding is a type of welding process used for welding thicker materials such as steel plates and pipes. It is a highly advanced welding process that helps in increasing welding productivity, providing better penetration, improving welding quality and weld strength, reducing waste, and increasing operational efficiency.

The main difference between Sub Arc welding and other arc welding method is that it requires shielding of the weld pool from the atmosphere rather than using a protective gas. It is a highly reliable process and is widely used in heavy industry and manufacturing processes.

It is also used for repairs, maintenance and fabrication work.

How Does It Work?

In Sub Arc welding, a continuous feed of welding wire is fed into the weld joint.

This welding wire is then melted by an arc created between the electrodes (source and target electrode) and the welding workpiece. The arc, which is powered by a welding power source, is created by short circuiting the welding wire and the welding job.

The arc is then used to melt the wire and form the weld pool. To protect the weld pool from the atmosphere, a shielding gas, usually a mixture of different gases such as argon and CO2, is passed over the weld pool from the back of the welding gun.

Advantages of Sub Arc Welding

Sub Arc welding offers several benefits including:
  • Increased welding productivity
  • Improved penetration
  • Higher weld strength and quality
  • Lower waste generated
  • Reduced maintenance costs
  • Increased operational efficiency

Applications of Sub Arc Welding

Sub Arc welding is used extensively in heavy industry and manufacturing.

Some of the applications include:

  • Steel structures and pipelines
  • Structural steel and tank fabrication
  • Off-shore and on-shore oil and gas platforms
  • Off-shore shipbuilding and repair
  • Bridge building and construction


Sub Arc welding is a highly efficient and reliable welding process used for welding thicker materials such as steel plates and pipes. It offers several benefits such as increased welding productivity, improved penetration, higher weld strength and quality, reduced waste, and increased operational efficiency.

It is used extensively in heavy industry and manufacturing and is suitable for a wide range of applications. Citations:https://www. weldmongerstore. com/pages/what-is-sub-arc-weldinghttps://www. millerwelds. com/resources/articles-and-videos/articles/what-is-submerged-arc-weldinghttps://www. thefabricator. com/article/arcwelding/an-introduction-to-submerged-arc-welding

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