Nipple Application Air Gas Non-Potable Water Oil Steam Finish/Coating Black Anodized Fitting Compatibility Schedule 40 Inside Diameter 4 1/64 in Manufacture Location Made in USA Material Steel Material Grade Grade A Maximum Operating Pressure 300 psi @ 150 Degrees F Maximum Steam Pressure 150 psi @ 360 Degrees F Metal Pipe Construction Welded Nominal Pipe Size 4 in Outside Diameter 4 1/2 in Overall Length 4 1/2 in Pipe Weld Type Continuous Weld Schedule Schedule 40