Difference Between Resistance Welded Pipe And Electrofusion Welded Pipe

Resistance welded pipe adopts a pressure welding method without filler metal. There is no other component filled in the weld. The skin effect and proximity effect of high-frequency current are used to instantly heat the edge of the plate to the welding temperature, and are extruded by the extrusion roller to form a forging.
Electrofusion welded pipe is a process in which the metal is heated between one or several consumable electrodes and the workpiece to combine the metals. The arc fully melts the metal and the filling material without the need for pressure. The filling metal part is easy to work It all comes from the electrodes. This process is similar to submerged arc welding, but its protection comes from inert gas, so the effect will be better.