Types of household water supply pipes
Copper pipe - Used for decades as the most common water supply pipe. Copper pipe and tubing comes in a variety of sizes and types.
Type L - Thick walled hard/soft copper
Type M - Thin walled hard/soft copper
Type K - Thick walled hard/soft copper
PVC - Used as a cold water supply pipe in many countries around the world because of the low price and ease of installation.
CPVC - Used as a hot/cold water supply pipe in many countries around the world because of the low price and ease of installation.
PEX - Is cross-linked polyethylene tubing and has become the standard in new home construction. PEX comes in a variety of colors and is used for plumbing and heating purposes.
Galvanized pipe - May still be found in many homes but is seldom used anymore because of water discoloration, cost and difficult repairs.
Types of household drainage pipes
ABS - A hard walled black plastic drain pipe used extensively in North America.
ABS Joining Methods
PVC - A hard walled white plastic drain pipe used throughout the world.
Cast iron - A very common drain pipe in older homes but is no longer used in residential plumbing.
Galvanized pipe - Common in many older homes and prone to maintenance. Easily discernable by the silver to whitish color and threaded fittings.
Copper DWV - A hard walled copper drain, waste and vent pipe(DWV) that was commonly used in older homes. Still commonly used in commercial and industrial construction, but to pricey for residential.