... ,civil use 3.SS400 Q23 4.Galvaniz Construction Corrugated Steel Pipe/Corrugated Steel Culvert CMP ... direction, and combination displacement. The application fields of Construction Corrugated Steel Pipe/Corrugated Steel Culvert1.Highway and railway ... , bridge, tunneling overhaul, temporary sidewalk2. Municipal works and construction: utility tunnel, optical cable protection, drainage pitch3. Water ...