Specifications of spiral welded steel pipes

Spiral welded steel pipe (SSAW) is a versatile material extensively utilized in construction, transportation, water conservancy, and other sectors. Its primary benefits include high strength, corrosion resistance, and strong pressure resistance. Spiral steel pipes are available in various specifications and models, depending on diameter and wall thickness. Below, we provide a detailed overview of these specifications and models.

1. Diameter Specifications

The diameter of spiral steel pipes typically ranges from DN20 to DN3000. Here, DN stands for nominal diameter, which is a standardized value slightly different from the actual diameter, specified for convenience.

2. Length Specifications

The length of spiral steel pipes is usually determined based on user requirements. The standard length is generally 12 meters, but other lengths can be customized according to customer needs.

3. Wall Thickness Specifications

The wall thickness of spiral steel pipes varies depending on the application and stress requirements, generally ranging between 2.5 and 10 mm. Variations in wall thickness can significantly impact pipe performance.

4. Connection Methods

Spiral steel pipes can be connected using various methods, including welding, flange connections, and socket connections. Welding is the most commonly used method, ensuring the pipeline’s sealing and long-term durability.

5. Surface Treatment

To extend the service life of the pipes, surface treatments such as coating and galvanizing are applied. These treatments effectively prevent oxidation, corrosion, and other potential issues, ensuring the pipe's longevity and reliability.