Corrugated steel pipe also called corrugated pipe culvert or corrugated metal pipe refers to the screw corrugated pipe buried in the road or under the railway culvert. It is circular corrugated pipe that composed of corrugated metal coils or semi-circular corrugated steel sheet. Its application has been extended to road culverts, underpasses, bridges, water seepage wells, temporary pavement, old bridges and culverts repairing, municipal drainage ditch, municipal utility tunnel, mine conveying pipes and other fields. According to the applications of corrugated steel pipe at home and abroad, it has a good applicable capacity and a promising future due to its features. Corrugated steel pipe advantages Real engineering cost is lower than the similar span bridge, culvert Short construction periods, mainly for assembling construction Use of standardized design, production, simple design and short production cycle Production is not affected by environment. Large-scale factory production, low