Which type of pipe is not suitable for use with a saddle clamp to connect water service?

The choice of asbestos cement pipe as unsuitable for use with a saddle clamp to connect water service is rooted in the material properties of asbestos cement. This type of pipe is particularly brittle compared to other materials. When applying a saddle clamp, there is a risk of cracking or breaking due to the localized stress that occurs during installation or when pressure is applied.

Asbestos cement pipes are designed to be installed using specific joining methods that account for their fragile nature, typically involving bell and spigot connections or solvent welds rather than mechanical fittings like saddle clamps, which could lead to failure of the pipe.

In contrast, centrifugal cast iron, galvanized iron, and PVC pipes possess more durability and flexibility to accommodate saddle clamps effectively. These materials can handle the mechanical stresses involved in the clamping process without the risk of damaging the pipe integrity.