Development direction of spiral welded pipe

With increasing demands on pipeline pressure resistance and the need for longer service life, carbon steel pipe manufacturers must innovate and improve in several key areas. Here are the main development directions for spiral welded pipes.

Large Diameter Thick-Walled Pipes:

Focus on producing pipes with larger diameters and thicker walls to enhance pressure resistance and durability.

New Structural Designs:

Develop steel pipes with innovative structures, such as double-layer spiral welded pipes. These pipes use strip steel with half the thickness of the pipe wall to create double layers, providing higher strength without the risk of brittle failure compared to single-layer pipes of the same thickness.

New Steel Grades and Smelting Technology:

Invest in developing new steel grades and improving smelting technology.

Utilize controlled rolling and post-rolling residual heat treatment technologies to continuously enhance the strength, toughness, and welding performance of the pipes.

Coated Pipes:

Develop coated pipes by applying an anti-corrosion layer to the inner wall. This not only extends the service life but also improves the smoothness of the inner wall, reducing fluid friction resistance, wax accumulation, and dirt. It also decreases the frequency of pigging operations and maintenance costs.

Market Competitiveness and Future Development

Spiral pipes are crucial for gas conveyance and transportation. With the planning and construction of major pipeline projects domestically and internationally, there is a significant demand for high-value-added products such as large-deformation pipeline steel, high-strength hot-simmering elbows, and thick-specification low-temperature pipe fittings. However, domestic enterprises have been slow in developing these products.

To meet market demands and enhance competitiveness, manufacturers should focus on:

- Large-Deformation Pipeline Steel: Develop high-value-added steel suitable for pipelines that undergo significant deformation.

- Steel for Hot Simmering and Bending: Create specialized steel grades for hot-simmering processes and bending applications.

- Low-Temperature Pipe Fittings: Produce steel for pipe fittings that can withstand low temperatures, essential for certain pipeline stations.

- High-Strength Pipes: Develop X100 straight seam submerged arc welded pipes, spiral seam submerged arc welded pipes, and hot-simmered spiral welded pipes suitable for industrial applications.

By advancing in these areas, carbon steel pipe manufacturers can significantly enhance their product offerings, meet stringent industry requirements, and maintain a competitive edge in the market.

Learn more: Future trends of SSAW steel pipe