Decorative pipes are also called stainless steel welded steel pipes for short, welded pipes, commonly used steel pipes or steel strips are welded after being crimped by a unit and a mold. Welded steel pipes have simple production process, high production efficiency, many varieties and specifications, and less equipment, but their general strength is lower than seamless steel pipes.

 

Since the 1930s, 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, and the variety and specifications of welded steel pipes have increased, and in more and more fields, especially in Heat exchange equipment uses pipes, decorative pipes, medium and low pressure fluid pipes, etc. to replace seamless steel pipes.