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ERW vs. SAW: Key Differences and Applications

Date:2025-03-21

Electric Resistance Welding (ERW) and Submerged Arc Welding (SAW) are two primary methods for manufacturing welded steel pipes, each suited for different applications.

  • ERW Pipes: Produced by high-frequency electrical resistance heating and pressure welding, ensuring a seamless joint without filler metal. They are precise, efficient, and ideal for medium-diameter pipelines in structural, water, and low-pressure oil and gas applications.
  • SAW Pipes: Manufactured using a submerged arc process, providing deeper weld penetration and higher strength. They are suitable for large-diameter, high-pressure pipelines, offshore structures, and long-distance oil and gas transportation.

While ERW offers speed and precision, SAW is preferred for heavy-duty applications requiring superior strength and durability.

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