How to identify the quality of SSAW steel pipe?

Poor quality SSAW (Spiral Submerged Arc Welded) steel pipes are prone to burrs due to the subpar equipment used by some inferior manufacturers. These burrs can scratch the pipe's surface and cause it to fold easily. Additionally, the pipes often have thin and weak seams, leading to a host of defects.

To achieve large negative tolerances, these manufacturers make significant reductions in material during production, resulting in inadequately filled iron molds and visible defects. The pipes are prone to cracking because the raw material, often adobe, contains numerous pores that lead to cracks during the cooling process. Rolling these materials exacerbates the issue, leading to further cracks.

Quality issues frequently arise in the production and use of SSAW steel pipes. Therefore, it's crucial to identify the quality of these pipes through specific methods and performance testing to ensure their suitability for actual use. One way to identify fake spiral steel pipes is by examining the surface for pimple-like imperfections. The overall weight can also provide clues, as poor-quality pipes often suffer from cumulative errors and inconsistencies.

The pitted surface of inferior spiral steel pipes is due to severe wear, resulting in irregular flaws. Manufacturers of shoddy SSAW steel pipes often prioritize profit, leading to substandard rolling practices. Poor-quality pipes are prone to scarring, and their ends are often uneven and lack a metallic luster. The size of the inner diameter can fluctuate greatly due to unstable steel temperatures and uneven composition.

Folding is a common defect in spiral steel pipes, characterized by various polylines that run longitudinally through the product. This defect occurs because manufacturers, in their pursuit of high efficiency, apply excessive pressure during rolling, leading to folding. These folded sections can crack after bending, reducing the strength of thick-walled spiral steel pipes.

Additionally, poor-quality SSAW steel pipes lack a standard rolling temperature and do not exhibit a metallic luster. They often have a pale red or pig iron-like color and an oval cross-section. To save on materials, some manufacturers apply excessive pressure during the rolling process, significantly reducing the rebar's strength and causing it to deviate from standard specifications.

Continental Steel is recognized as an excellent manufacturer and exporter of SSAW steel pipes. Our pipes are produced to the highest quality standards, ensuring reliable and consistent performance. You can confidently choose our spiral welded pipes for your needs.