Nipple Application Air Natural Gas Non-Potable Water Oil Steam Finish/Coating Black Fitting Compatibility Class 300 Gravity Flow No Inside Diameter 1 1/2 in Manufacture Location Globally Sourced Material Steel Material Grade Grade B Maximum Operating Pressure 300 psi @ 550 Degrees F Maximum Operating Temperature 600 Degrees F Maximum Steam Pressure 1846 psi @ 650 Degrees F Metal Pipe Construction Welded Minimum Operating Temperature -20 Degrees F Nominal Pipe Size 1 1/2 in