Spiral Rib Pipe

Outwardly projected box-type ribs create a smooth interior for enhanced hydraulic performance, making spiral rib pipe ideal for manhole to manhole storm sewer runs. Spiral rib pipe combines the strength of metal with the hydraulic characteristics of today’s most efficient pipes. Available in diameters up to 120" (steel) and 72" (aluminum).

Hydraulically Efficient

Material Options for Spiral Rib Pipe

Aluminum Alloy (minimum service life of 75 - 100 years) 
The core material for aluminum alloy pipe is specially formulated to resist the effects of corrosion and abrasion. Corrosion resistance is further improved by cladding each surface of the core with a higher grade aluminum alloy that totals 10% of the total sheet thickness.


Aluminized Steel Type 2 (minimum service life of 75 -100 years)
Aluminized steel pipe combines the strength of steel with the corrosion resistance of aluminum. Pipe is produced from steel coil with a one-ounce per square foot aluminum coating.


Asphalt-Coated Galvanized Steel
A uniform coating is applied to the interior and exterior of the pipe to increase the service life of galvanized CSP.

Galvanized Steel (minimum service life of 50 years)
The traditional galvanized CSP is produced from steel coil with a two-ounces per square foot zinc coating.


Polymer Coated Steel (minimum service life of more than 100 years)
A 10-mil polymer film is laminated over each side of a galvanized steel coil to create the premier coating available today. The protective film is a tough, rugged polyolefin laminate that provides galvanized CSP with a durable barrier that exceeds the corrosion and abrasion resistance of all other coatings with the added feature of providing a 100-year service life.


 The Installation Advantages over Concrete Pipe:

  • Fewer Joints
  • Lighter Weight
  • Stronger Joints
  • Handling Ease
  • Longer Pipe Lengths
  • Quicker Installations

SRP requires 40 percent less joints than concrete pipe installations. Fewer joints mean fewer problems during and after installation.