SSAW Production Line (Φ219mm-Φ3500mm) Spiral shaped, double–submerged arc welding pipe production lines (Spiral Weld Pipe Mills Φ219mm-Φ3500mm) can meet API-5L, GB9711.1, GB9711.2 Standards. We also assist pipe line manufacturing firms in layout, planning and design of products and manufacturing process, and we also supply complete sets of equipment for spiral welding pipes production. |