Find Corrugated Steel Pipe (CSP) Projectsselect a marker or visit our e-news archive for more info Filter byAll Coating Type Aluminized Type 2 Galvanized (Zinc Coated) Polymer Coated Project Application Detention / Retention DOT Project Pipe and Arch Rehabilitation Project Structural Plate ZIP / Address: Radius: 25mi50mi75mi100mi150mi200mi300mi No results found in this location. Please try again.