Nipple Application Air Natural Gas Non-Potable Water Oil Steam Finish/Coating Black Fitting Compatibility Class 300 Gravity Flow No Inside Diameter 2 29/32 in Manufacture Location Globally Sourced Material Steel Material Grade Grade B Maximum Operating Pressure 1507 psi @ 650 Degrees F Maximum Operating Temperature 600 Degrees F Maximum Steam Pressure 1507 psi @ 590 Degrees F Metal Pipe Construction Welded Minimum Operating Temperature -20 Degrees F Nominal Pipe Size 3 in