Is submerged arc welded steel pipe seamless?
Submerged arc welded steel pipe and seamless steel pipe are not the same type of steel pipe. There are obvious differences in manufacturing technology between submerged arc welded steel pipe and seamless steel pipe, no matter in welding, or in production processes such as process forming, chemical composition and tensile strength, the two are well distinguished.
Submerged arc welding steel pipe is a kind of spiral steel pipe, which is welded by automatic double-wire submerged arc welding technology. With strip coil as raw material, temperature extrusion molding and automatic double-wire double-sided submerged arc welding technology are often used, and spiral submerged arc welding is mostly used for large diameter welded pipes.
Submerged arc welding technology is an ideal choice in steel pipe production, which has the simplest single wire form, double wire structure, series double wire structure and multi-wire structure, and has greater advantages in increasing productivity, improving working environment and ensuring stable quality.
The seamless steel tube is a long steel tube with hollow cross section and no seam around it, which is made of solid tube blank by piercing and rolling. According to the shape of cross-sectional area, it can be divided into circular tube and special-shaped tube.
