Welds: The main difference between seamless pipe and an ERW pipe is that a seamless pipe is manufactured without welds or joints, whereas an ERW pipe is manufactured from longitudinally welded steel parts, with welds having a higher impact toughness than a seamless pipe and being highly durable with high concentricity and uniform wall thickness.
Cost-effectiveness：Both of these steel pipes can meet the conditions of use in harsh environments, but relatively speaking, erw production costs are lower, and this product allows manufacturers to buy the right steel pipe at a reasonable price.
Characteristics: erw steel pipe is cold rolled after hot rolling process, which has excellent corrosion and oxidation resistance. And after strict heat treatment, the weld properties are consistent with the basic material properties. Welded pipe has normal pipe ends, threaded pipe ends, slant pipe ends and other pipe ends.
High dimensional accuracy: the diameter and wall thickness deviation of welded pipe is much smaller than that of seamless pipe, and the surface is smooth.
These unique properties can be easily customized to different shapes and sizes to meet customer needs in all directions.
In short, the resistance welding process has high production efficiency, relatively low manufacturing costs, and is suitable for large-scale production, saving materials and easy automation.
In addition, erw has the advantages of easy welding, cutting, forming, drilling and machining, which makes erw a very reliable and popular steel pipe in engineering.
