What are the different types of pipes used for internal and external plumbing work, along with their details?

Question

Accepted Answer

Various pipes are used in plumbing, each suited for specific applications, materials, and environments.

PVC (Polyvinyl Chloride): Commonly used for drainage, waste, and vent systems due to its corrosion resistance.
CPVC (Chlorinated Polyvinyl Chloride): Suitable for hot and cold water supply, with higher temperature tolerance than PVC.
PEX (Cross-Linked Polyethylene): Flexible and easy to install, ideal for residential plumbing and radiant heating systems.
Copper: Durable and long-lasting, often used for water supply lines; resistant to corrosion but can be expensive.
Galvanized Steel: Used for water supply lines, but less common today due to corrosion issues; often replaced by other materials.
Cast Iron: Primarily used for drainage and sewer systems due to its strength and sound-dampening properties.
HDPE (High-Density Polyethylene): Used for underground water and gas lines; resistant to chemicals and corrosion.

Interview Questions Asked to Assistant Manager - MEP at Other Companies