CentriPipe pipe lining system provides a less expensive, no-dig solution for structural lining of culverts using its patented bi-directional spincaster to centrifugally compact a precision liner at the best design thickness for the size, shape, and conditions of deteriorated pipe. It inhibits rust and resists abrasion, and it waterproofs, seals, structurally reinforces, and protects round, arched, and elliptical pipe. AP/M Permaform. www.centripipe.com