CULVERT pipe

Cost-effective drainage solutions. Smooth Wall Casing and Corrugated Metal Pipe (CMP) options.

CULVERT PIPE: SMOOTH WALL & CMP OPTIONS

Culvert pipe refers to steel tubing engineered for heavy-duty drainage, trenchless road boring, and structural applications. By utilizing surplus and secondary steel instead of expensive prime-grade material, contractors can realize substantial cost savings on driveways, civil casings, and agricultural projects without sacrificing structural integrity.

Common Culvert Sizes & Applications

Selecting the right diameter and material depends heavily on burial depth and traffic loads.

Diameter (OD)	Typical Application	Recommended Material
12" - 24"	Driveways & Shallow Trenches	Smooth Wall (Resists crushing under heavy trucks)
24" - 48"	Municipal Drainage & Storm Sewers	Corrugated Metal Pipe (CMP) for economy
36" - 60"+	Road Boring & Trenchless Utility Tunnels	Smooth Wall Casing (Provides structural shell)

Option 1: Smooth Wall (Secondary Steel)

Often referred to as "Reject" or "Limited Service" pipe, this material may have failed a high-pressure test at the mill, but it is structurally perfect for gravity-fed drainage. Smooth wall pipe is much thicker than corrugated pipe, making it the superior choice for shallow driveway burial or when pushed underground as steel road casing.

Key Advantages

Heavy Wall: Ideal for shallow burial under heavy logging or construction trucks.
Cost: Sold at a steep discount compared to Prime tested pipe.
Strength: Robust enough to be driven directly into the ground as structural pipe piling.

Best Uses

› Driveway Culverts (Heavy Equipment)
› Bollards & Bumper Posts
› Trenchless Road Boring
› Temporary Bridge Supports

Option 2: Corrugated Metal Pipe (CMP)

For municipal drainage, stream enclosures, and massive storm sewers, Corrugated Metal Pipe is the engineered standard. The corrugations (ribs) allow thin steel to support massive soil loads over wide spans.

Profiles: 2-2/3" x 1/2" (Standard) or 3" x 1" (Heavy Duty).
Coatings: Enhance lifespan with Galvanized (Zinc) or protective pipe coatings like Aluminized Type 2 (75-year lifespan).
Shapes: Round or Pipe-Arch (Squashed profile for low clearance areas).

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Important Note on "Culvert Grade"

Please consult your dealer. "Culvert Grade" or "Secondary" means the pipe has no mill test reports (MTRs) and cannot be used for high-pressure fluid applications. It is sold strictly for structural or gravity-flow use.

Culvert Pipe FAQ

Common questions regarding the selection and structural limits of culvert grade steel.

Secondary or reject pipe means the material may have failed high-pressure tests at the mill, making it unsuitable for gas lines. However, it is structurally perfect for gravity-fed drainage, making it a highly cost-effective culvert option.

Heavy-wall smooth steel is preferred for shallow burial under heavy truck traffic because it resists crushing better than thin corrugated metal. CMP is an excellent, economical choice for deeper trenches and standard municipal drainage.

No. Culvert grade and secondary pipe lack Mill Test Reports (MTRs) and are sold strictly for gravity-flow drainage or structural applications. They are not rated to hold pressurized fluids.

Standard driveway culverts typically range from 12 to 24 inches in diameter. Heavy civil and road boring projects often use casing sizes from 24 up to 60 inches or more.

Drainage Solutions

🌊Culvert Grade Pipe›🌀Spiral Weld (Casing)›🏗️Steel Piling›🛡️Pipe Coating›

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