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
John Rolfe Square – 2017 Retention/ Detention Project of the Year
By: Lane Enterprises, Inc. Lane Enterprises, Inc. are the recipients of the 2017 Retention/Detention Project of the Year award for their work at John Rolfe ... Read more
Project Spotlight : Highway 160 Interchange
by Pacific Corrugated Pipe Galvanized steel pipe was used to create isolation casings for bridge foundations on a project in Antioch, California in 2014. ... Read more
Project Spotlight: North Carolina State Veterans Home Culvert
By: Big R Bridge Constructed in 2011, this is the longest single span box culvert of any material in North America. This was also the ... 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