DIPRA offers complimentary training materials, seminars/webinars, and lectures throughout North America to consulting and utility engineers.

Installation Guides

DIPRA offers multiple complimentary installation guides full of information for designers and installers of Ductile iron pipe.

Access a PDF of the Ductile Iron Pipe Installation Guide here.


Review DIPRA’s Installation Guide for all detailed requirements for a trench to accommodate Ductile iron pipe.

Design Steps

Applying Encasements

Ductile iron pipe is resistant to corrosion in most soils and typically requires only effective, economical polyethylene encasement or V-Bio® enhanced encasement in more aggressive environments.

V-Bio pipe


Direct tapping of Ductile iron pipe is easier, safer, less expensive, and faster. Tapping PVC can result in cracked pipes, injured workers, and costly flooding.

Gaskets & Joints

Ductile iron pipe has a wider variety of joints and gaskets available than any other piping material.