Electric Resistance Welded steel pipe or ERW

 Straight seam resistance welded pipe is a common steel pipe product. It is made by rolling a steel plate into a tube shape and then performing resistance welding on the edge of the tube plate. The characteristic of this kind of pipe is that the welding point is straight, so it is called straight seam resistance welded pipe.

 Straight seam resistance welded pipes are usually made of carbon steel, alloy steel or stainless steel and have high strength and corrosion resistance. It is widely used in construction, structural engineering, pipelines, machinery manufacturing and other fields. Compared with seamless steel pipes, straight seam resistance welded pipes have lower production costs, so they are widely used in some situations with general requirements.