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The distinction between SAW and ERW pipes that you should know

Carbon steel pipe comes in a variety of shapes and sizes. Different forming procedures, such as ERW, LSAW, and SSAW, may be found in welded steel pipe. So, first and foremost, what are the distinctions between SAW and ERW pipe? SAW and ERW are two different types of welding. SAW pipes (LSAW, SSAW) and ERW saw pipes in Malaysia are quite different in many ways. 

A distinct definition.

From the definition, we can observe the distinctions between SSAW and ERW pipe. Submerged Arc Welded pipe is also known as SAW pipe. There are two types of saw pipes, LSAW and SSAW, which are made from various weld seams. SSAW has a spiral weld seam, as the name implies. A directional weld seam is also present in LSAW. Electric Resistance Welded pipe is also known as ERW pipe.

SAW and ERW Pipe Have Different Weld Seams.

For pipes, the exterior quality is critical. Despite the fact that both SAW and ERW pipes have a weld seam. However, the ERW pipe’s weld seam is flat. The SAW pipe’s weld seam is not flat. The weld seam of the LSAW and SSAW pipe is greater than the steel plate, as you can see. As well as the weld seam height tolerance mentioned in the requirements. When ERW pipes are compared to SAW pipes, the surface quality of ERW pipes is superior. ERW pipes offer a superior finish and are smoother. It’s all about the weld strengthening, both internal and exterior, in most SAW pipes.

20210330104256185618 - The distinction between SAW and ERW pipes that you should know

In comparison to SAW pipes, ERW pipes have fewer defects.

We’ll see it through the flaws. Because SAW has a solvent deposit. Apart from the faults in the volume, it causes further defects. Wire-line and linear welds are the only flaws identified in ERW pipes. It has the ability to examine. The flaws are noticeable. It’s also easy to detect because of the ultrasonic reflection on the surface. In the case of saw pipe, however, examinations include not just the weld seam but also the source material. SAW pipes are all greater than 219 mm in diameter and generally have thick walls.

The Residual Stress Ratio.

ERW pipes have a lower residual stress ratio than SAW pipes. ERW pipe distortion is more common in ERW, followed by flat oval size. It causes elliptical vertical shifts and necking, which reduces the tension. ERW pipes had a less displacement. It contrasts the axial and transverse cuts to SAW pipe that has been constructed. It was also noticeable when utilizing the same substance.


Despite the fact that the performance of ERW and SAW pipe is the same, steel scrap and welding can be done on ERW if the pipes have a fault. While this is not the case with SAW, which can lead to cracking or corrosion, ERW is more robust. The distinctions between SAW and ERW may be seen in these five features. You may already have an idea of what SAW and ERW pipes are. 

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