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May 1 2018
CentriPipe is the only system that maximizes the pipe interior for capacity and flows while providing a fully structural “pipe within a pipe.”
Case Studies
Mar 29 2018
During a routine annual inspection in 2013, Grottoes, Va.—a town of 2,600 noted for its proximity to Grand Caverns, America’s oldest show cave—…
Case Studies
Oct 5 2017
Lake City, Ga., is part of the Atlanta metro area. In recent years, new construction has overgrown existing underground assets, making rehabilitation…
Sep 13 2017
The Florida Department of Transportation identified 48-in. corrugated metal pipe (CMP) along Highway 87 in Navarre Beach that needed to be repaired…
Case Studies
Mar 31 2017
Tomhannock Reservoir, located in the state of New York, is more than 5 miles long and holds 12.3 billion gal when full. Parts of the reservoir’s…

AP/M Permaform

Celebrating 40 years of engineered solutions, AP/M Permaform offers cost-effective repair and trenchless replacement of badly deteriorated manholes, pipe and similar underground structures. Our Permaform system enables complete replacement of old manholes and wet wells without digging or disrupting flows. For rehabilitation of existing manholes, Permacast—our engineered cementitious liner—is centrifugally cast from our patented robotic applicator. A dense and uniform liner is applied at the best thickness (1/2 in. to 2 in.) for the condition, depth, traffic loading and ground water pressure of the existing structure. CentriPipe is an engineered solution for underground infrastructure rehabilitation using our patented bidirectional spin caster to centrifugally compact a precision liner at the best design thickness for the size, shape and conditions of deteriorated pipe. It inhibits rust, waterproofs and seals, is highly resistant to abrasion and structurally reinforces and protects round, arched and elliptical pipe. Our formulations are high-strength, quick-setting and corrosion-resistant. For chemical corrosion, Cor+Gard 100% solids epoxy is applied as a protective top coat. In all cases, our materials are applied safely through our patented bidirectional spin caster from on top, without entry. Let us know how we can assist with your next trenchless rehabilitation project.


PO Box 555

Johnston, IA 50131-0555

United States

Phone: 800.662.6465

Fax: 515.276.1274