Ductile Iron And Cast Iron Pipes: A Century Of Reliability In Service

Ductile iron and cast iron pipes have established a legacy of resilience in water and wastewater infrastructure, with many installations remaining in service for over 100 years. Cast iron became a staple in the early 19th century due to its strength and durability. The development of ductile iron in the 1940s further revolutionized the industry, providing enhanced strength, greater flexibility, and superior resistance to cracking and corrosion.

The enduring value of these materials is formally recognized by the Ductile Iron Pipe Research Association’s (DIPRA) Century Club, which honors utilities whose iron pipes have been in continuous service for a century or more. While newer materials like PVC and HDPE are popular for their initial cost and ease of installation, their typical life expectancy ranges from 50 to 75 years, and they have not yet demonstrated comparable longevity. The quality of materials, superior engineering, and advancements in coatings and joints continue to make iron pipes a valuable, long-term investment for durable infrastructure.