Which of the following is a suitable material for water main pipes?

Stainless steel is a suitable material for water main pipes due to its exceptional resistance to corrosion, durability, and strength. It is capable of handling a wide range of temperatures and pressures, making it ideal for various water distribution systems. Stainless steel is also less likely to leach harmful chemicals into the water, providing an added benefit for safe drinking water transport. Its longevity means that stainless steel pipes can often exceed the lifespan of other materials, reducing the need for frequent replacements and maintenance.

While galvanized iron is known for its initial resistance to rust due to the zinc coating, it can corrode over time, especially in certain soil conditions and environments. Ceramic, while it may be used in some applications for its durability and resistance to corrosion, is generally not suitable for water mains due to its fragility and the risk of breakage under pressure. PVC, or polyvinyl chloride, is commonly used for water pipes because it is lightweight, resistant to corrosion, and easy to install; however, it may not be as resilient in high-pressure or high-temperature applications as stainless steel.

These characteristics highlight why stainless steel is often preferred for water mains, particularly in situations where robustness and a long lifespan are critical considerations.