1.Construction Corrugated Steel Pipe/Corrugated Steel Culvert 2.Pipe for Road culvert,mining,civil use 3.SS400 Q23 4.Galvaniz Construction Corrugated Steel Pipe/Corrugated Steel Culvert CMP ... , side direction, and combination displacement. The application fields of Construction Corrugated Steel Pipe/Corrugated Steel Culvert1.Highway and railway: culvert, passage, bridge, tunneling overhaul ...