- Economical, durable, rugged, easily installed and maintained and is readily available to meet your Corrugated Metal Pipe (CMP) drainage needs.
- Corrugated Steel Pipe (CSP) with the highest service life, strength and hydraulic properties.
We provide corrugated steel pipe for use in culverts, subdrains, sewers, service tunnels, recovery tunnels, etc
Benefits of Corrugated Metal Pipe CMP include:
- Long service life – capable of 100+ years
- Superior Hydraulics – fabricated fittings provide superior hydraulics by minimizing energy losses at junctions
- Durable coating options to fit your needs
- Great strength – the strength and integrity of steel-soil structure interactions are almost unlimited
- 100% traceability – with verifiable data reports from the producing steel mills
- Allowable fill heights over 100 feet and minimum covers as low as 12 feet
Corrugated Steel Pipe Usage Guidelines
| Protective Coatings & Pavings | Standard Specifications | Environmental Conditions | Abrasion | Provides Additional Soil Slide Protection | |||||
| Normal | Mildly Corrosive | Corrosive | Non- Abrasive Level 1 | Low Abrasion Level 2 | Moderate Abrasion Level 3 | Severe Abrasion Level 4 | |||
| Zinc Coated (Galvanized) | AASHTO M36ASTM A929 |  | | | | ||||
| Aluminum Coated Type 1 | AASHTO M36ASTM A929 | | | | | ||||
| Aluminum Coated Type 2 | AASHTO M274ASTM A929 | | | | | ||||
| Bituminous Coated | AASHTO M190ASTM A849 | | | | | | | ||
| Bituminous Coated & Paved | AASHTO M190ASTM A849 | | | | | | | | |
| Polymerized Bituminous Invert Coated* | ASTM A849 | | | | | ||||
| Polymer Precoated | AASHTO M245ASTM A742 | | | | | | | | |
| Polymer Precoated and Paved | AASHTO M245ASTM A742 | | | | | | | | |
| Aramid Fiber Bonded | ASTM A885 | | | | | | | | |
| Bituminous Coated | AASHTO M190ASTM A849 | | | | | | | |
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| Aramid Fiber Bonded & Bituminous Paved | ASTM A885 | | | | | | | | |
| High Strength Concrete Lined | ASTMA849ASTM A979 | | | | | |
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| Concrete Paved Invert (75mm (3″) Cover) | ASTM A849ASTM A979 | | | | | |
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* Use Bituminous Coated Guidelines for Fully Coated Product. This Guide is not a substitute for professional engineering advice and is made without guarantee or representation as to results. Although every reasonable effort has been made to assure its accuracy, neither the National Corrugated Steel Pipe Association nor any of its members or representatives warrants or assumes liability or responsibility for its use or suitability for any given application.