High-frequency welded pipe (ERW) is produced by heating and melting the edge of the tube blank by using the skin effect and proximity effect of high-frequency current after the hot-rolled coil is formed by the forming machine, and then pressure welding is performed under the action of the extrusion roller.
The advantages of high-frequency welded pipe mainly include the following aspects:
Efficient production : High-frequency welded pipe production has the characteristics of strong continuity and high efficiency. For example, for steel pipes with an outer diameter of less than 1 inch, the welding speed can reach a maximum of 200 meters/minute; for steel pipes with an outer diameter of 25 inches, the welding speed can also reach more than 20 meters/minute 1. This efficient production method gives high-frequency welded pipes significant advantages in industrial production.
High-quality welding : High-frequency welded pipes use the skin effect and proximity effect of high-frequency current, the heat-affected zone of the welding part is small, the weld strength is high, and the quality is stable and reliable. In addition, high-frequency welded pipes do not require weld fillers, no welding spatter, beautiful welding shape, and good mechanical properties .
Wide range of applications : High-frequency welded pipes are suitable for welding various metal pipes, such as carbon steel, stainless steel, alloy steel, etc. Widely used: High-frequency welded pipes are widely used in civil construction, petrochemical, light industry and other sectors, and are suitable for various engineering components and light industrial products.
straight seam pressure pipe
