High-frequency welded steel pipe: it is a product produced by using the skin effect and proximity effect of high-frequency current to heat and melt the edge of the tube blank after the hot-rolled coil is formed by the forming machine, and pressure welding is carried out under the action of the squeezing roller. High frequency welded steel pipe has the characteristics of relatively simple process and rapid continuous production, which is widely used in civil construction, petrochemical, light industry and other departments. It is mostly used to transport low-pressure fluids or make various engineering components and light industrial products.

The production process of high-frequency welded steel pipe mainly depends on the product variety, from raw materials to finished products need to go through a series of processes, to complete these processes need the corresponding various mechanical equipment and welding, electrical control, testing devices, these equipment and devices according to different process requirements have a variety of reasonable arrangement.

High-frequency welded steel pipe: The high-frequency resistance welded steel pipe is different from the ordinary welded pipe welding process. The weld is formed by melting the base material of the steel strip body, and the mechanical strength is better than the ordinary welded pipe. High-frequency welded steel pipe is hot-rolled coil after forming machine, the use of high-frequency current skin effect and proximity effect, so that the edge of the tube blank heating and melting, under the action of the squeeze roller pressure welding to achieve production.

High-frequency welded steel pipe: smooth appearance, high precision, low cost and small weld surplus, which is beneficial to the coating of 3PE anti-corrosion coating. The welding methods of high frequency welded steel pipe and submerged arc welded pipe are significantly different. Since the welding is completed instantly at high speed, the difficulty of ensuring the quality of welding is much higher than that of submerged arc welding, and the quality of high-frequency welded steel pipes is reliable and durable.