Plastics Pipe Institute

PPI is the major North American trade association focused on advocacy and education for plastics use in pipe, conduit and infrastructure solutions.



Our Mission

Improving quality of life today, and for generations to come, by championing the advancement, acceptance,
and use of sustainable and resilient plastic pipe systems.



With administrative offices located in Irving, Texas, the Plastics Pipe Institute, Inc. (PPI) is the major trade association representing all segments of the plastics piping industry. PPI members share a common interest in broadening awareness and creating opportunities that expand market share and extend the use of plastics piping systems in all its many applications. As an association, PPI focuses collaborative efforts to accumulate data, concentrate facts and target resources toward advancements in applications and increases in widespread usage.

Handbook of Polyethylene Pipe

Your Authoritative Guide on Polyethylene Pipe.
Click to purchase 


Plastic piping systems are a sustainable and environmentally responsible choice that will serve generations to come. They are energy efficient during manufacturing and provide peak protection from contamination during service. Strong, durable, light-weight and flexible, these piping systems require significantly less energy to fabricate, transport and install than metal or concrete alternatives. With superior resistance to corrosion and abrasion, plastic piping systems also supply long service life, excellent joint performance and offer leak free protection-all adding up to exceptional value.
Read more HERE.


Plastic pipe delivers exceptional value, unwavering reliability and remarkable advantages over conventional types of piping. It's today's right choice for water service, drainage, fuel gas, conduit and plumbing & heating. Other reasons plastic pipes are a superior choice:
  • Long-term service life
  • Highly-resistant to corrosion, abrasion and chemicals
  • Strong, durable, flexible and lightweight
  • Longer-length pipe with leak-proof joints
  • Lower labor requirements for installations
  • Significant overall cost savings 


This manual provides both technical and general information to aid in the design, specification, procurement, installation, and understanding of high-density polyethylene (HDPE) pipe and fittings. Municipal and consulting engineers should use M55 in preparing plans and specifications for new HDPE pipe projects. This manual will help managers, technicians, and engineers to:

  • Understand the engineering properties of polyethylene
  • Get key information on manufacturing, testing, and inspection
  • Obtain knowledge on the hydraulics of PE pipe
  • Understand working pressure ratings and external load design
  • Gain insight into transportation, handling, and storage best practices for PE pipe
  • Identify procedures for the installation, maintenance, and repair of PE pipe

This second edition includes extensive updates throughout with significant updates pertaining to installation, external loading, and soil characteristics. The section on trenchless installations has been overhauled and updated to reflect current practices. Updates pertaining to current PE resins have been included throughout the manual. New appendices on earthquake applications, case studies, pipe data, and model specifications have been added.

Values & Beliefs

The Plastics Pipe Institute is a non-profit trade association dedicated to the advocacy and advancement of use of plastics in pipe infrastructure systems because they are smart, economical and sustainable solutions. The mission of PPI is to advance the acceptance and use of plastic pipe systems through research, education, technical expertise and advocacy.