Stainless steel welded pipe, referred to as welded pipe, is commonly welded into steel pipe made of steel or steel strip after being curled and formed by the unit and mold. The production process of welded steel pipe is simple, the production efficiency is high, there are many varieties and specifications, and the equipment investment is small, but the general strength is lower than that of seamless steel pipe.
Since the 30s of the 20th century, with the rapid development of high-quality strip continuous rolling production and the advancement of welding and inspection technology, the quality of welds has been continuously improved, the varieties and specifications of welded steel pipes have increased, and seamless steel pipes have been replaced in more and more fields, especially in heat exchange equipment pipes, decorative pipes, medium and low pressure fluid pipes, etc.
