High-frequency Welded PipeThe advantage of this processing technology lies in the post-weld heat treatment process, which eliminates residual stress in the weld and heat-affected zone, refines the grain structure, reduces the heat-affected zone of the weld, and accelerates heating speed, thereby significantly improving welding speed and weld quality. Moreover, it can use uncleaned, shot-peened, and edge-cut steel strips as raw materials, and is capable of welding alloy steel, high-alloy steel, and non-ferrous metal tubes. This greatly reduces the per-unit power consumption, allowing a single welding system to produce various high-frequency welded pipes.

However, for high-frequency welding tube units, the larger the diameter, the more it is restricted by the weight and thickness of the strip steel material, and the storage equipment is limited by the spiral sleeve. Additionally, the line speed of high-frequency welding tube units is high, whereas the speed of submerged arc welding is generally 3m/min, which does not match. Therefore, high-frequency welding tube units need to fully utilize and expand their own advantages to improve product quality and develop new products.