The type of piping identified by its silver gray color and threaded connections is galvanized steel. Galvanized steel pipes are coated with a layer of zinc to protect them from corrosion. This coating gives them a distinct silver gray appearance. The threaded connections on galvanized steel pipes make them easy to install and connect with other piping or fixtures.
In contrast:
- Copper piping is known for its reddish-brown color and does not typically have threaded connections.
- Brass piping has a gold-like appearance and is not usually silver gray.
- PVC piping is white or gray in color and does not have threaded connections like galvanized steel pipes.
Therefore, based on the characteristics of silver gray color and threaded connections, the correct answer is galvanized steel.
