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Welded steel pipes, on the other hand, are manufactured by welding steel plates or coils end to end. This process involves the use of welding technology, such as high-frequency induction welding or submerged arc welding, to create a continuous joint along the length of the pipe. The presence of a weld seam characterizes these pipes.

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Welded pipes may have lower strength and durability due to the presence of a weld seam. While advancements in welding technology have improved the quality of welded joints, they may still be more susceptible to defects and corrosion compared to seamless pipes. However, welded pipes remain cost-effective and are widely used in applications where the demands on strength are less stringent.

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The manufacturing process of seamless pipes involves complex and energy-intensive procedures, making them generally more expensive than welded pipes. The absence of seams and the higher quality often justify the higher cost, particularly in industries where reliability and performance are paramount.

Welded pipes are more cost-effective due to their simpler manufacturing process. The use of steel plates or coils and the welding method contribute to lower production costs, making welded pipes a preferred choice for applications where cost considerations outweigh the need for seamless integrity.

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Welded pipes find applications in a variety of industries, including construction, plumbing, and infrastructure. Their cost-effectiveness makes them suitable for projects where the benefits of seamless pipes are not essential, and the lower cost becomes a significant advantage.