What is a common reason for the obsolescence of cast iron pipes?

The reason for the obsolescence of cast iron pipes is primarily linked to the development and availability of newer materials that offer significantly better durability and resistance to various environmental factors. Modern materials, such as PVC, HDPE (high-density polyethylene), and ductile iron, have been engineered to withstand pressure and chemical corrosion more effectively than cast iron, which can be susceptible to deterioration over time.

Newer materials typically boast longer life spans and are often lighter, making them easier to handle and install. They also provide enhanced flexibility and resistance to cracking, which is crucial in many applications, including areas prone to ground movement or extreme weather conditions. This advancement in materials technology has led to a shift away from cast iron, as utilities and contractors opt for solutions that minimize replacement costs and downtime in the long term.

While factors such as cost, corrosion susceptibility, and maintenance are significant, the key impact of newer materials offering improved performance is what primarily drives the trend towards obsolescence for cast iron piping systems.