What is the high-frequency resistance welded steel pipe?

The high-frequency resistance welded steel pipe, also called ERW pipe, is produced by hot-rolled coils after forming on a forming machine. The skin effect and proximity effect of high-frequency current are used to heat and melt the edges of the tube blank, and pressure welding is performed under the action of squeeze rolls to achieve production.

High frequency resistance welded steel pipe advantages:

High frequency resistance welded steel pipe is different from ordinary welded pipe welding process. The weld seam is made by melting the base metal of the steel strip body, and its mechanical strength is better than that of ordinary welded pipe. The appearance is smooth, high precision, low cost and low welding seam height, which is beneficial for the coating of 3PE anticorrosive coating. There are significant differences between the welding methods of high frequency welded steel pipes and submerged arc welded pipes. Because the welding is completed instantaneously at high speed, the difficulty of ensuring the welding quality is much higher than the submerged arc welding method.