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polymer-coated cmp

A pipe with a smooth interior is the material of choice for storm sewer applications and a lower-cost alternative to reinforced concrete pipe. The smooth interior improves hydraulic capacity (Manning’s “n” = 0.012, equal to concrete pipe) while the exterior box ribs provide structural strength.



  • Since CMP weighs less than 10% of concrete pipe, handling and installation costs are greatly reduced. Aluminum has only 1/35 the weight of concrete pipe.

  • Lower labor costs also result from fast and easy joining, joints or coupling bands do not require special skills or tools. Twenty-foot standard lengths mean fewer joints and faster laying.

  • Shop-fabricated fittings save installation time in the field while providing hydraulically efficient junctions.

  • Steel pipe with a heavy-gage polymer coating; protects against abrasion and corrosion to provide a service life of 100+.

properties & shapes


  • Diameters 18”-120”

  • Wall thicknesses of 16, 14, 12, and 10 gage

  • 3/4” x 3/4” x 7-1/2” continuous rib corrugation

  • Standards lengths are 20’-40’


  • Full Round – recommended for most applications

  • Pipe-Arch – used in limited headroom conditions. The low, wide pipe-arch design distributes the flow area horizontally, providing hydraulic capacity without lowering the grade.

Pipe Reline Solutions | Polymer Coated CMP
Pipe Reline Solutions | Polymer Coated CMP
Pipe Reline Solutions | Polymer Coated CMP

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