Types of plumbing pipes

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
Copper pipe
PVC - Used as a cold water supply pipe in many countries around the world because of the low price and ease of installation. PVC water pipe
CPVC - Used as a hot/cold water supply pipe in many countries around the world because of the low price and ease of installation. CPVC pipe
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. PEX tubing
Galvanized pipe - May still be found in many homes but is seldom used anymore because of water discoloration, cost and difficult repairs. Galvinized pipe

Types of household drainage pipes

ABS - A hard walled black plastic drain pipe used extensively in North America.

ABS Joining Methods
ABS pipe (P-Trap)
PVC - A hard walled white plastic drain pipe used throughout the world. PVC drain pipe
Cast iron - A very common drain pipe in older homes but is no longer used in residential plumbing. Cast iron pipe
Galvanized pipe - Common in many older homes and prone to maintenance. Easily discernable by the silver to whitish color and threaded fittings. Galvinized pipe
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. Copper DWV pipe and fitteings