The Grainger Approved 1/2" x 8" Black Pipe Nipple is made from ASTM A53 Grade B ERW steel. It has 1/2" NPT threads on both ends and is 8" long. This nipple is zinc plated for corrosion resistance. It can be used to extend and connect black iron piping in plumbing, HVAC, irrigation, and industrial applications. The working pressure is 850 psi and temperature range is -20°F to 450°F. It meets ASME B16.3 specifications. This nipple provides a cost-effective way to make threaded connections.