The Characteristic of Welded steel pipe

　　Welded steel pipe is also known as welded pipe, is made of steel or steel strip after the forming of welded steel pipe. Welded steel pipe production process is simple, high production efficiency, variety of specifications, equipment investment, but the general strength of less than seamless steel tube. Since the 1930s, with the rapid development of high quality strip rolling production and the progress of welding and inspection technology, the weld quality has been increasing, the variety specifications of Manufacturer AISI Welded Steel Pipe are increasing, and more and more fields have replaced the seamless steel tube. Welded steel tubes are divided into straight seam welded pipe and spiral welded pipe. Straight seam welded pipe production process is simple, high production efficiency, low cost, rapid development. The strength of spiral welded pipe is generally higher than that of straight seam welded pipe, which can produce pipe with larger diameter with narrower billet, and can produce pipe with different diameters with the same width. But compared with the same length of straight seam tube, the weld length increases $number and the production speed is lower. Therefore, the smaller-caliber welded pipe mostly adopts straight seam welding, and the large diameter welded pipe is mostly spiral welded