High-frequency welded pipe is a hot-rolled coil formed by a forming machine. The edge of the tube blank is heated and melted by the skin effect and proximity effect of high-frequency current, and then pressure welding is carried out under the action of extrusion rollers to realize production.

Process flow:

The production process mainly depends on the product variety. From raw materials to finished products, a series of processes are needed. In order to complete these processes, various mechanical equipment and welding, electrical control and detection devices are needed. These equipment and devices are reasonably arranged according to different process requirements. The typical process of high frequency welded pipe is: longitudinal cutting-uncoiling-strip leveling-head-tail cutting-strip butt welding-looper storage-forming-welding.