- American Concrete Pipe Company
- Manufacturer of reinforced concrete sanitary sewer pipe, reinforced concrete storm sewer pipe, reinforced concrete culvert pipe and reinforced precast concrete manholes.
- Concrete Industries, Inc.
- Supplier of high quality structural concrete building and bridge systems, concrete pipe, steel reinforcing bar, large retaining wall systems and other buildiing materials for the construction industry.
- Grand Junction Pipe & Supply
- Specializing in concrete pipe and precast products, sand and gravel, readymix for commercial and residential concrete pours.
- Hancock Concrete Products Company, Inc.
- Produces pre-cast concrete pipe, culverts, boxes, manholes, and arches for regional drainage projects. Online brochures, explanation of hydraulic requirements for products.
- Independent Concrete Pipe Co.
- Manufacturing reinforced concrete pipe for storm and sanitary sewers.
- McPherson Concrete Products
- Supplier of concrete storage systems, feed bunks, precast concrete, concrete sewers, ready mix concrete and concrete pipe.
- National Concrete Pipe Company
- Manufacturer of concrete conduits used for retainage systems, storm and sanitary sewers.
- Premarc Corporation
- Supplies the underground construction industry with concrete products including all sizes of concrete storm and anitary sewer pipe, manholes and similar structures, box culverts.
- Sherman-Dixie
- Manufactures and markets precast concrete pipe and precast concrete storm and sanitary civil-engineered systems.
- Upper Peninsula Concrete Pipe Company, Inc.
- Manufacturing precast concrete drainage products, reinforced concrete pipe and end sections, box culverts, storm and sanitary manholes, small span 3-sided culverts.
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