24" Galvanized Corrugated Steel Pipe (CSP) 16ga

Galvanized corrugated steel pipe (CSP) is a go-to choice for driveway culverts, roadside drainage, and stormwater runoff. The steel pipe is formed with strong corrugations for structural performance, then zinc-galvanized to help protect against corrosion in typical drainage environments. Our CSP meets or exceeds ASTM A760 and AASHTO M36 specifications, with galvanized coating references including AASHTO M218 and ASTM A929. Available in a wide range of diameters and corrugation profiles to fit everything from small drainage lines to large culverts—ask our team to help you choose the right size, length, and gauge for your site and cover depth.