A high-frequency welded circular tube is a circular tube produced by welding metallic materials (primarily steel plates) together using the resistance heat effect of high-frequency current.
In addition to high-frequency welded circular tube, it may also be referred to as high-frequency longitudinal seam tube, electric welded longitudinal seam tube, longitudinal seam tube, high-frequency tube, high-frequency welded tube, circular tube, among other names.
