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 Maximum Operating Pressure 2076 psi @ 650 Degrees F Maximum Operating Temperature 600 Degrees F Maximum Steam Pressure 2076 psi @640 Degrees F Metal Pipe Construction Seamless Minimum Operating Temperature -20 Degrees F Nominal Pipe Size 3 in Outside Diameter 3 1/2 in