Longitudinally Submerged Arc Welding Pipes (LSAW Pipe) is the primary product of PV PIPE and is produced using a high-quality steel plate as the key input factor. Steel plates are produced by qualified suppliers, which are rigorously evaluated by PV PIPE based on meeting all technical and quality requirements. Steel plates are formed into a round shape, welded by submerged arc welding technology, and then mechanically expanded into the final dimensional tolerance.