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Also the pipes non-deformability is very well. It is a solution to the damage to the culvert from frost. The road surface above the culvert pipes is very plain, and thus improves the comfortableness of car. These pipes avail to improving the structure of the soft soil foundation and the interlocking of the junction of the embankment, which improves the safeness of the car on the bridge. These maintenance cost of corrugated steel pipes is very low, and the cost of engineering practice is also lower than other bridge culverts. Corrugated steel pipe is a very promising product because of its unique advantages and adaptability. They are widely used in culverts, galleries, bridges, tunnels, temporary detours, drain pipes of highway and railway and mine retaining walls of roadway supporting.