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 / 3/4 in Material / Steel Material Grade / Grade B Maximum Operating Pressure / 300 psi @ 550 Degrees F Maximum Operating Temperature / 600 Degrees F Maximum Steam Pressure / 2555 psi @ 650 Degrees F Metal Pipe Construction / Welded Minimum Operating Temperature / -20 Degrees F Nominal Pipe Size / 3/4 in Outside Diameter / 1 3/64 in Overall Length / 1 1/8 in Pipe Weld Type / Electric Resistance Weld Schedule / Schedule 80 Side A Connection Type / Close Thread Side A Gender / Male Side A Thread Type / NPT Side B Connection Type / Close Thread Side B Gender / Male Side B Thread Type / NPT Standards / ASTM A53 Type E Grade B Thread Configuration / Fully Threaded Wall Thickness / 0.109 in