ASTM A520 Seamless Carbon Steel Pipe and ERW Pipe
ASTM A520 standard specifies the production and use requirements of seamless carbon steel pipe and ERW (electric resistance welded) pipe. Seamless carbon steel pipe and ERW pipe differ in manufacturing process, application scenarios and performance.
Properties | Seamless carbon steel pipe | ERW pipe |
Manufacturing process | Hot-rolled, cold-rolled or | Resistance welding, welding steel plates or |
Welding seam | Weld-free structure | Welded, weld seams exist |
Strength and performance | High strength, high pressure and high temperature resistance | Suitable for medium and low pressure |
Application scenarios | High pressure and high temperature fields such as petroleum, natural gas, and chemical industry | Medium and low pressure applications such as |
Production cost | High | Relatively low, suitable for large-scale |
Dimensional accuracy | High | Higher precision, but the weld affects |
Selection Guide
1. Seamless carbon steel pipe: suitable for high-strength and high-pressure projects, such as oil and gas transportation and high-temperature pipelines.
2. ERW pipe: suitable for medium and low pressure applications, such as construction and machinery manufacturing, with higher cost performance.
