The double weld of the welded pipe refers to welding inside and outside the crease of the line at the same time or quickly. Compared with the single weld, the double weld can increase the strength and stability of the steel pipe and improve the service life of the steel pipe.
The most common welding technology used for double-seam welded pipe is submerged arc welding (SAW). This process is particularly suitable for high-productivity welding of thick materials, making it ideal for pipeline production.
In submerged arc welding, the welding arc is completely covered by a layer of granular flux. Therefore, the double weld of the welded pipe can make the force-bearing area of the steel pipe larger, thereby improving the bearing capacity and seismic resistance of the steel pipe. At the same time, the double weld can make the structure of the steel pipe more stable and avoid deformation and fracture during use. And the double weld of the welded pipe makes the inside and outside of the steel pipe fully welded, thereby avoiding problems such as air leakage and leakage during the use of the steel pipe, and improving the service life of the steel pipe.
Straight seam double-sided welded steel pipe is widely used in various fields. In the construction field, it is used in water supply, heating, refrigeration and other systems. In the infrastructure field, it is used in highways, railways, bridges and other projects. In the utility sector, it is used in systems such as power, communication, etc.
Double seam welded pipe
