Which materials are commonly used for piping in plumbing?

The choice of materials commonly used for piping in plumbing includes PVC, copper, steel, and PEX due to their specific properties that make them suitable for different plumbing applications.

PVC (polyvinyl chloride) is widely used for drainage, waste, and vent piping due to its resistance to corrosion and ease of installation. Copper is favored for its durability, reliability, and resistance to corrosion, making it a preferred material for supply lines and heating systems. Steel pipes, particularly galvanized steel, are used in certain plumbing applications for their strength and ability to handle high pressure. PEX (cross-linked polyethylene) has gained popularity in residential plumbing because of its flexibility, resistance to scale and chlorine, and ability to withstand extreme temperatures.

Other choices include materials that either do not fulfill the necessary standards for water delivery or drainage or are outdated or less commonly used in modern plumbing systems. For example, aluminum is not typically used for plumbing due to its tendency to corrode, and glass would not be practical for the majority of plumbing applications. Likewise, materials like charcoal and wood are not appropriate choices for piping due to issues with durability, hygiene, and safety in carrying water or waste.