First used in North America in 1942, LCP consists of a welded steel cylinder with steel joint rings at each end, an internal concrete lining, high-tensile strength steel wire wrapped directly on the steel cylinder and an external coating of Portland cement mortar.
First installed in North America in 1953, ECP consists of a welded steel cylinder with steel joint rings at each end and embedded in a concrete core, high-tensile strength steel wire wrapped on the exterior concrete core surface and an external coating of Portland cement mortar.
Prestressed concrete cylinder pipe (PCCP; lined) brings together concrete’s high compressive strength and steel’s high tensile strength to form a durable structure that can stand up to any project’s requirements. It is ideal for all municipal water and wastewater applications, as well as industrial piping. PCCP is manufactured in accordance with the AWWA C301 Standard and is designed in accordance with the AWWA C304 standard.
Many major benefits can be realized by using PCCP. The source of all these benefits is the pipe’s unique design concept, featuring a steel cylinder for water-tightness and a rugged, high-strength concrete structural core circumferentially prestressed with high strength steel wire. The Portland cement-rich mortar coating provides a passivating alkaline environment for the steel cylinder, joint rings and prestressing wire to protect against corrosion. Since concrete continues to gain strength while underground, the PCCP will continue to provide superior service for years to come.