Nipple, Application Air, Gas, Non-Potable Water, Oil, Steam, Finish/Coating Black Anodized, Fitting Compatibility Schedule 40, Inside Diameter 6 1/16 in, Manufacture Location Made in USA*, Material Steel, Material Grade Grade B, Maximum Operating Pressure 300 psi @ 150 Degrees F, Maximum Steam Pressure 150 psi @ 360 Degrees F, Metal Pipe Construction Welded, Nominal Pipe Size 6 in, Outside Diameter 6 5/8 in, Overall Length 12 in, Pipe Weld Type Electric Resistance Weld, Schedule Schedule 40