What type of piping is primarily used for hot water delivery in a building?

Copper piping is primarily used for hot water delivery in a building due to its excellent thermal conductivity, which allows it to efficiently transfer heat. Additionally, copper is highly resistant to corrosion and scaling, making it a durable choice for plumbing systems that handle hot water. This material can withstand high temperatures without compromising the integrity of the pipe, which is crucial for hot water systems.

In contrast, while PVC piping is lightweight and easy to install, it is not suitable for hot water applications because it can warp or deform under high temperatures. Galvanized steel piping, though once popular, is prone to corrosion over time and can lead to reduced water quality and flow issues. Cast iron piping is primarily used for drainage and sewage systems, as it is heavy and not designed for transporting hot water.