Welding steel pipe production process is simple

　　Welded steel pipe, also known as welded pipe, is a steel plate or strip after the coil formed by the welding made of steel. Welding steel pipe production process is simple, the production efficiency is high, the variety specification is much, but the strength is lower than the seamless steel pipe.

　　Since the thirties of the 20th century, along with the rapid development of high quality cold rolling strip steel rolling production and progress of welding and inspection technology, weld quality rising, welding steel pipe specifications and more and more, and in more and more fields instead of the seamless steel pipe.