600mm to 2000mm Penstock Pipe for Hydropower Spiral Welded Pipe
spiral welding and straight seam welding. Galvanized spiral welding has a wider range of uses but is also more difficult.
spiral welding and straight seam welding. Galvanized spiral welding has a wider range of uses but is also more difficult.
400mm 500mm 600mm 700mm 800mm 100mm to 2000mm Penstock Pipe for Hydropower
600mm 700mm 800mm 100mm to 2000mm Penstock Pipe for Hydropower