... Resitant Buried Corrugated Steel Culvert CMP is one kind of flexible, thin-wall, tube with lateral corrugation. It ... Corrosion Resitant Buried Corrugated Steel Culvert1.Highway and railway: culvert, passage, bridge, tunneling overhaul, temporary sidewalk2. ... tunnel, optical cable protection, drainage pitch3. Water conservancy: culvert, passage, bridge, pilotage pipeline, drainage pipeline4. Coal mine ...