The Grainger 1" x 11" Black Pipe Nipple is made from ASTM A53 Grade B ERW steel pipe. It has National Pipe Thread ends and is zinc coated for corrosion resistance. This nipple has an outside diameter of 1.315 inches, a wall thickness of 0.133 inches, and a length of 11 inches. It can be used to extend and connect black steel piping in industrial, commercial, and residential applications. The working pressure is 680 psi at 100°F. This nipple provides a cost-effective threaded pipe fitting for black steel piping systems.