Innovative Spiral Welded Pipes Revolutionize Infrastructure Development

In a significant advancement for the construction and industrial sectors, spiral welded pipesare emerging as a game-changer in the production of large-diameter Steel Pipes. Utilizing low-carbon or low-alloy structural steel strips, these pipes are formed by rolling the steel at a specific spiral angle, known as the forming angle, and then welding the seam. This method allows for the production of large-diameter pipes using narrower steel strips, offering a range of benefits that are transforming their application across various industries.

Key Advantages of Spiral Welded Pipes:

1. Versatility in Production: One of the standout features of spiral welded pipes is their ability to produce pipes of different diameters from the same width of steel strip. This is particularly advantageous for creating large-diameter pipes from narrower strips, optimizing material usage and reducing costs.

2. Enhanced Strength and Efficiency: Spiral welded pipesexhibit superior stress distribution compared to straight-seam pipes, with the spiral.The stress on the weld is only 75% to 90% of that on the straight seam Welded Pipe.This allows them to withstand higher pressures, enabling a reduction in wall thickness by 10% to 25% for pipes of the same external diameter under equivalent pressure conditions.

3. Precision Engineering: These pipes boast remarkable dimensional accuracy, with diameter tolerances generally not exceeding 0.12%, deflection less than 1/2000, and ovality under 1%. This precision often eliminates the need for additional sizing and straightening processes, streamlining production.

4. Continuous Production Capability: Theoretically, spiral welded pipes can be produced in lengths, minimizing the loss from cutting ends and enhancing metal utilization by 6% to 8%.

5. Operational Flexibility: Compared to straight-seam pipes, spiral welded pipes offer greater operational flexibility and ease in adjusting production for different specifications.

6. Cost-Effective and Mobile Production: The equipment for producing spiral welded pipes is lighter and requires less initial investment. It can even be mounted on trailers for mobile production directly at pipeline construction sites.

7. Automation and Mechanization: The production process of spiral welded pipes is highly conducive to mechanization and automation, further enhancing efficiency and reducing labor costs.

    Materials and Applications:

     Spiral welded pipes are manufactured from a variety of materials including Q235A, Q235B, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, 16Mn, 20#, Q345, L245, L290, 40#, 60#, X42, X46, X70, and X80. 

  Mainly used in water supply projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction. For liquid transportation: water supply, drainage. For gas transportation: coal gas, steam, liquefied petroleum gas. For structural use: as piling pipes, bridges; docks, roads, building structure pipes, etc.