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.
64inch mild steel SSAW spiral welded pipe for oil/petroleum
ASTM A252 Spiral Welded Pipe 10 inch steel pipe