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How are high-quality spiral tubes manufactured?

2021/02/18

How are high-quality spiral tubes manufactured?

We all know that producing high-quality spiral pipes requires not only superior steel but also robust support across all stages of the manufacturing process. Only in this way can we ensure that every spiral pipe meets stringent quality standards. So, what other factors influence the quality of spiral pipes? Let’s take a closer look.

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Testing Methods for Spiral Tube Manufacturing Processes

2021/02/16

Testing Methods for Spiral Tube Manufacturing Processes

Spiral pipes, also known as spiral steel pipes or spiral welded pipes, are manufactured by rolling low-carbon structural steel or low-alloy structural steel strips into a tubular blank at a specific helical angle—referred to as the forming angle—and then welding the seam. This process enables the production of large-diameter steel pipes from relatively narrow steel strips. So, what are the manufacturing processes and inspection methods for spiral pipes? Let’s take a look.

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Methods for Surface Treatment of Spiral Tubes

2021/02/14

Methods for Surface Treatment of Spiral Tubes

Surface treatment methods for spiral pipes: 1. Cleaning Solvents and emulsions are used to clean the steel surface, removing oil, grease, dust, lubricants, and similar organic substances. However, this method cannot eliminate rust, scale, welding flux, or other contaminants from the steel surface; therefore, it serves only as a supplementary step in corrosion‑prevention processes.

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How can the stability of spiral welded steel pipes be ensured?

2021/02/12

How can the stability of spiral welded steel pipes be ensured?

To better ensure the consistent performance of spiral steel pipes, it is essential to make determinations based on actual conditions; only then can you achieve greater reliability. Therefore, mastering this process is of paramount importance. Of course, we also recognize that professional spiral steel pipe manufacturers offer the greatest support, as they possess core manufacturing expertise.

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What should be considered when selecting steel for spiral pipe production?

2021/02/10

What should be considered when selecting steel for spiral pipe production?

What should spiral pipe manufacturers pay attention to when selecting steel during production? Our staff at the spiral pipe manufacturer is here to walk you through it.

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Protection of Anti-Corrosion Spiral Steel Pipes During Construction

2021/02/08

Protection of Anti-Corrosion Spiral Steel Pipes During Construction

Anti-corrosion spiral steel pipes require careful handling not only during manufacturing but also during storage. This approach not only extends the service life of the pipes but also ensures that, even after long-term storage, they remain in as good condition as when they left the factory, making them easier to sell.

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Spiral Pipe Manufacturer: Common Causes of Deformation in Spiral Pipe Production

2021/01/23

Spiral Pipe Manufacturer: Common Causes of Deformation in Spiral Pipe Production

What are the common causes of problems in spiral pipe production? During smelting or hot working, certain factors—such as non-metallic inclusions, gases, improper process selection, or incorrect operating procedures—can lead to defects within the steel or on its surface. These defects severely compromise the quality of the material or product and may even result in scrap. Common defects in spiral welded pipes and their causes include porosity, blowholes, shrinkage cavities, residual defects, non-metallic inclusions, segregation, white spots, cracks, and various abnormal fracture‑related flaws. All of these can be identified through macroscopic examination, which includes acid‑etching inspection and fracture analysis.

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The difference between spiral welded pipe and straight-seam welded pipe

2021/01/20

The difference between spiral welded pipe and straight-seam welded pipe

The primary difference between spiral welded pipe and straight-seam welded pipe lies in their welding processes. Spiral welded pipe is manufactured by rolling low‑carbon structural steel or low‑alloy structural steel strip into a tubular blank at a specific helical angle—also known as the forming angle—and then welding it to form the seam. This method enables the production of large‑diameter pipes from relatively narrow strips. Spiral welded pipe is predominantly represented by spiral submerged‑arc welded pipe (SSAW), which is widely used in China for constructing various gas pipelines. Its dimensions are specified as “outer diameter × wall thickness.” Spiral welded pipes can be either single‑sided or double‑sided welded, and they must meet prescribed requirements for hydrostatic testing, weld tensile strength, and cold‑bend performance.

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