Production Features of High-frequency Electric Resistance Welded Steel Pipe

High-frequency resistance welded steel pipe(erw steel pipe) has the following characteristics:
(1) High-frequency resistance welding filler metal is a no pressure welding.
(2) High-frequency resistance welding high welding speed, high production efficiency. Since the current high concentration of energy in the weld zone, fast heating, and thus high welding speed. For example, China has introduced 426 units, the maximum welding speed 45m / min, the minimum welding speed 15m / min.
(3) The weld heat affected zone. Due to the highly concentrated energy welding, heating speed, high welding speed, the workpiece strong self-cooling effect, so the heat affected zone.
(4) High welding production technology and management level requirements. High-frequency welding is resistance welding in a continuous production line, the welding speed, high production efficiency, factors affecting the welding process and more, you must have a high level of technology and management level, in order to weld the whole production line more harmonization of elements up to a steady access to quality welded steel pipe.