What Are The Differences Between Straight Weld Vs Spiral Weld Pipes?

Given that they are manufactured differently, there are variations in their uses, strengths, and functionality.

The main difference between the straight weld and spiral weld pipes lies in their manufacturing process.

Straight welded pipes are made by bending and forming a steel billet. Once the desired shape is made, this is then welded together down the length of the pipe. This process creates a straight, longitudinal seam down the very center of the pipe. Hence, its name. Spiral welded pipes, in contrast, are rolled from a steel billet to create a helical angle. The edges are welded together to create a pipe.

The manufacturing process of straight welded steel pipes is much simpler. They are typically made with high-frequency welding techniques, while spiral welded pipes are made using a submerged arc welding method.

Comparing the two, straight welded pipes are more efficient to manufacture, offering lower production costs but higher development speeds, compared to spiral weld methods.

When comparing the two types of steel pipe, spiral welded pipes have a certain advantage when it comes to pipe strength. This is because they are produced through submerged arc welding. This welding technique offers great quality and uniform welds and deeper weld penetration than other techniques.

With spiral welded pipes, you can produce pipes of different diameters, even when using billets of the same width. You can also create spiral welded pipes with larger pipe diameters, even with narrower steel billets.

Comparing it with the same size of billet used to make a straight welded pipe, the weld length of a spiral welded pipe can be increased from 30% up to 100%. However, creating larger diameter spiral welded pipes can take much longer to produce.

Thus, small diameter pipes are typically made with straight welding methods. Larger diameter pipes are typically made through spiral welding.

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