Features Max. pressure: 300 psi WOG at 550°F Extra-heavy nipples handle higher pressures and more rugged service. NPT threads. For use in air, water, oil, and gas applications. Maximum pressure in accordance with ASME B31.3 Process Piping Code. Meet ANSI/ASME B1.20.1 and ASTM A-53, A733. Application / Air, Natural Gas, Non-Potable Water, Oil, Steam Finish/Coating / Black Fitting Compatibility / Class 300 Inside Diameter / 9/16 in Material / Steel Material Grade / Grade B Maximum Operating Pressure / 1621 psi @ 650 Degrees F Maximum Operating Temperature / 600 Degrees F Maximum Steam Pressure / 1621 psi @ 650 Degrees F Metal Pipe Construction / Welded Minimum Operating Temperature / -20 Degrees F Nominal Pipe Size / 1/2 in Outside Diameter / 13/16 in Overall Length / 2 1/2 in Pipe Weld Type / Electric Resistance Weld Schedule / Schedule 80 Side A Connection Type / Threaded Side A Gender / Male Side A Thread Type / NPT Side B Connection Type / Threaded Side B Gender / Male Side B Thread Type / NPT Standards / ASME B1.20.1, ASTM A53, ASTM A733 Thread Configuration / Threaded on Both Ends Wall Thickness / 0.125 in