Straight seam welded pipes and spiral welded pipes are both common welded steel pipes in fluid transportation, building engineering, and steel structure, etc. So what's the differences between straight seam welded pipes and spiral welded pipes?
1. Weld shapes: The weld of straight seam welded pipes is a straight line, while the weld of spiral welded pipes is a spiral line with different helix angles.
2. Flexibility in material selection: The production of different specifications straight seam welded pipes requires the steel straps (plates) with specific widths. While spiral welded pipes of different diameters can be made of steel straps (plates) of the same width.
3. Strength and compressive strength: The longitudinal strength of straight seam welded pipes is high, but the compressive strength is relatively low. The outer diameter and wall thickness of straight seam welded pipes are both limited. While the circumferential strength and compress strength of spiral welded pipes are superior to those of straight seam welded pipes. Its size range is large and usually used in high pressure environments.
Comparison between straight seam welded pipes and spiral welded pipes
|
Factor |
Straight seam welded pipes |
Spiral welded pipes |
|
Strength |
lower compressive strength | higher strength and compressive strength |
|
Size range |
outer diameter and wall thickness are both limited, suitable for small and medium diameter steel pipes | suitable for large dimeter steel pipes |
|
Raw material |
steel straps (plates) with specific widths | no specific requirements |
In summary, straight seam welded pipes and spiral welded pipes have their own advantages. Straight seam welded pipes are suitable for small and medium diameter steel pipes, while spiral welded pipes play an important role in large diameter, high pressure, and long distance transportation projects. The selection between straight seam welded pipes and spiral welded pipes should be based on specific application needs.
