Steel and aluminum pipe is available in a variety of corrugations and wall thicknesses in diameters up to 144”. Corrugated steel pipe (CSP) is available in several protective coatings to provide design service life, while aluminum pipe does not require protective coating. These choices allow designers to economically match the best material to the site conditions.

Corrugated metal pipe (CMP) and spiral rib pipe (SRP) are available in four different material types to economically meet the environmental and service life conditions defined for each installation.