This process, just as the name implies, results from a circular motion. The manufacturer will take the plate and wind and weld the substrate of the steel plate or HR coil in a spiral. This is a method that is referred to as helical submerged arc welded (HSAW). The product resulted is much thicker and longer than the other methods. In most cases, this is the preferred method because it is cost-effective, fast, efficient and simple.
Regardless of how a welded steel pipe is classified, the market for distributors and producers is extremely strong. A company that offers a diverse option of welded steel pipes is able to maintain consistent profits. If you are searching for a company to provide you with the welded steel pipe you need, search for one that strives to exceed the expectations of the API regarding quality.