A welded steel pipe is produced by crimping and welding steel plates or strips, typically with a length of 6 meters. The manufacturing process of welded steel pipes is straightforward, highly efficient, and cost-effective, requiring relatively low equipment investment. These pipes come in various types and specifications, but generally, their strength is lower compared to seamless steel pipes. Welded steel pipes are classified into straight seam welded pipes and spiral welded pipes (SSAW steel pipes) based on the type of weld used. They can also be categorized by the production method, such as arc welded pipes, electric resistance welded (ERW) pipes, high frequency or low frequency gas welded pipes, and furnace welded pipes.