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 / 61/64 in Material / Steel Material Grade / Grade B Maximum Operating Pressure / 2281 psi @ 650 Degrees F Maximum Operating Temperature / 600 Degrees F Maximum Steam Pressure / 2281 psi @ 650 Degrees F Metal Pipe Construction / Welded Minimum Operating Temperature / -20 Degrees F Nominal Pipe Size / 1 in Outside Diameter / 1 5/16 in Overall Length / 1 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 / 0.172 in