OverviewALT2 ApplicationsDOT InformationSuccess StoriesResources
Aluminum Coated Type 2
Aluminum coated type 2 CSP has been installed at thousands of sites over the past 50 years and many of these sites have been and are still being monitored for performance. Recent AK Steel research has indicated that 14 gage ALT2 CSP can achieve a 100-year service life when the environmental conditions have a pH of 5 to 9 and a resistivity greater than 1500 ohm-cm.
For more information download our Pipe Selection Guide found here.
ALT2 Applications
DOT Information
The below is a map of the states that currently accept ALT2 coated pipe and plate in their specs.
Success Stories
Project Spotlight: Wilsey Road
By: TrueNorth Steel Pennington County in Wall, SD reconstructed the layout of a road and needed a culvert option that could accommodate the change. They ... Read more
2023 Project of the Year – Polymer Coating: Jackson Hole Airport Runway Improvement Project
By: Contech Engineered Solutions LLC Located within the heart of the Grand Teton National Park, the Jackson Hole Airport Runway Reconstruction Project was a unique ... Read more
2023 Project of the Year – Rehabilitation Winner: Union Pacific Bridge Replacement
By: Lane Enterprises, Inc. Railway timber trestles were extensively used in the 19th century, making up from 1 to 3 percent of the total ... Read more
Studies, Resources & Marketing Materials
- The Measured Performance of Aluminized Type 2 Steel Pipe in Storm Sewer Applications in the North Georgia Region – A research project on the durability of Aluminized Steel Type 2 pipe installed in the metro Atlanta area has resulted in an outstanding report of the product’s performance.
- Durability of Aluminized Type 2 Corrugated Steel Pipe Exposed Throughout the United States – A report by Elzly Technology Corporation documenting the performance and environmental conditions of aluminized type 2 coated CSP in 11 states and parts of Canada.
- Service Life – ALT2 Field Reports
- EFFECTS OF GAGE ON PIPE DURABILITY: Based on 75 Years Minimum Service Life at 16 Gage – For Worst-Case Conditions Within The Recommended pH/Resistivity Ranges
- Meeting New Durability Standards and Expanding Environmental Limits with Corrugated Steel Pipe