Pipe Nipple, Application Air, Gases, Non-Potable Water, Oils, Finish/Coating Black Anodized, Inside Diameter 4 in, Manufacture Location Made in USA, Material Steel, Material Grade Not Applicable, Maximum Operating Pressure 1, 000 psi @ 150 Degrees F, Maximum Operating Temperature Not Applicable, Maximum Steam Pressure 300 psi @ 550 Degrees F, Metal Pipe Construction Seamless, Minimum Operating Temperature Not Applicable, Nominal Pipe Size 4 in, Outside Diameter 4 1/2 in, Overall Length 6 in. This item has been restricted from sale in the following state (s): []