Which of the following is LEAST true regarding brass pipe?

Brass pipe is indeed a common choice for plumbing applications due to its durability and corrosion resistance, making it suitable for various environments. Its natural resistance to rust means that it often lasts longer than other metal pipes. Furthermore, brass is frequently used in fittings and valves because of its malleability and the ability to create a strong, watertight seal, which is essential in plumbing systems.

Regarding identification, brass pipe is generally not marked with black paint. In contrast, some other materials, such as cast iron or certain types of PVC, might use color coding for quick visual identification purposes. However, the standard for brass does not include this practice. Therefore, the assertion that brass pipe is marked with black paint is the least accurate concerning its characteristics and common identification practices in plumbing.