... .SS400 Q23 4.Galvaniz Construction Corrugated Steel Pipe/Corrugated Steel Culvert CMP is one kind of ... displacement. The application fields of Construction Corrugated Steel Pipe/Corrugated Steel Culvert1.Highway and railway: culvert, passage ... tunnel, optical cable protection, drainage pitch3. Water conservancy: culvert, passage, bridge, pilotage pipeline, drainage pipeline4. Coal mine: minerals ...