Nipple, Application Air, Natural Gas, Non-Potable Water, Oil, Steam, Finish/Coating Black, Fitting Compatibility Class 300, Gravity Flow No, Inside Diameter 1/2 in, Manufacture Location Globally Sourced, Material Steel, Maximum Operating Pressure 300 psi @ 150 Degrees F, Maximum Operating Temperature 600 Degrees F, Maximum Steam Pressure 4156 psi @ 650 Degrees F, Metal Pipe Construction Seamless, Minimum Operating Temperature -20 Degrees F, Nominal Pipe Size 1/2 in, Outside Diameter 53/64 in