The answer to 'difference between PVC pipe and cast iron pipe' is that PVC (polyvinyl chloride) and cast iron are two common types of pipes used for plumbing and drainage systems in homes. PVC pipes are lightweight, corrosion-resistant, and relatively inexpensive, making them a popular choice for residential applications. Cast iron pipes, on the other hand, are heavier, more durable, and often used in older homes or for commercial/industrial applications.
PVC pipes are typically easier to install and require less specialized tools, while cast iron pipes are more challenging to work with and often require specialized equipment. PVC pipes also have a smoother interior surface which can improve water flow, while cast iron pipes are more resistant to damage from tree roots and other environmental factors. The choice between PVC and cast iron pipes will depend on the specific needs of the home, the local building codes, and the preferences of the homeowner.