The type of pipe that is MOST frequently made with bell and spigot ends is:

The type of pipe that is most frequently made with bell and spigot ends is cast iron. This design involves one end of the pipe being flared out (bell) to receive the end of another pipe (spigot), creating a secure and leak-resistant joint that is especially effective for gravity flow in sewage systems. Cast iron pipes are known for their durability and strength, which make them ideal for handling the weight of soil and maintaining structural integrity over time in various environmental conditions. This bell and spigot joint configuration allows for easier installation and alignment of pipes, as well as accommodating slight shifts in position and temperature variations, which is crucial in sewage treatment applications.

In contrast, while brass, steel, and transite pipes may be used in various applications within plumbing and sewage systems, they are less commonly associated with this specific joint configuration. Brass pipes are typically used for smaller diameter applications, steel pipes often require welded joints for strength, and transite is a less common material due to its composition and historical usage.