End Treatment of Corrugated Metal Pipe Enhancing Performances, Pipe Arch Outlasts Concrete Structure. Lightweight and Economical, Structural Plate Pipe Protecting and Decorating the Landscape, Corrugated Structural Plate Assembled Into Seven Arches, Aluminum Box Culvert, the Premier Replacement of Concrete Culvert, Corrugated Metal Pipe Does Better But Saves Money and Time, Building Materials ...