standing seam rolling machine_standing seam rolling machine

The production of welded line pipes typically begins with high-quality steel plates. These plates are subjected to specific processes, such as hot or cold rolling, to achieve the desired thickness and diameter. Once the plates are prepared, they are formed into cylindrical shapes. The edges of the plates are then welded together using various techniques, including electric resistance welding (ERW) or submerged arc welding (SAW).