Key Characteristics of Welded Steel Pipes
Advantages
a.High production efficiency and low cost: The continuous production process maximizes raw material utilization, typically resulting in prices 20%-50% lower than seamless steel pipes.
b.Flexible diameter range: Capable of producing ultra-large diameter pipes (e.g., over 2 meters in diameter), which is difficult to achieve with seamless steel pipes.
c.High dimensional accuracy and smooth surface finish: Especially for ERW pipes manufactured from cold-rolled coils, which exhibit excellent appearance and quality.
d.Long fixed lengths: Capable of producing extremely long continuous pipe sections.
Disadvantages
a.Welded Seams: The welded area exhibits differences from the base material in microstructure, mechanical properties, and other aspects, representing a potential weak point.
b.Relatively Lower Pressure Resistance: Under identical material and dimensional conditions, its pressure resistance-particularly fatigue resistance-typically falls below that of seamless steel pipes.
c.High Dependence on Raw Materials: Its quality is largely contingent upon the quality of the steel plate or strip used.
Primary Applications
Due to their cost-effectiveness and flexibility, welded steel pipes are widely used in:
| Building Structures | Building trusses, columns, scaffolding (ERW welded pipes are used for coupler-type scaffolding). |
| Fluid Conveyance | Low-pressure pipelines for water, gas, petroleum, natural gas, etc. |
| Machinery Manufacturing | Agricultural machinery frames, furniture, supermarket shelving, automotive exhaust systems. |
| Municipal Engineering | Urban drainage and sewage systems (commonly using spiral welded pipes). |
Summary
Welded steel pipes are an economical and highly versatile steel pipe product manufactured through welding processes.
The key selection criteria are:
If you require low-cost, large-diameter piping for structural support or low-pressure fluid conveyance, welded steel pipes are the ideal choice.
We are able to provide high quality Welded Steel Pipe according to customers' needs and look forward to your purchase.
