This Grainger Approved nipple has a weld bead on the inside and is NPT threaded at both ends. - Model resists rust and corrosion. - For low-pressure plumbing applications including air, water, oil, natural gas, and steam. - Certified for use in potable water applications. Application / Air, Gas, Potable Water Finish/Coating / Galvanized Fitting Compatibility / Schedule 40 Material / Steel Maximum Operating Pressure / 300 psi @ 150 Degrees F Maximum Steam Pressure / 150 psi @ 350 Degrees F Metal Pipe Construction / Welded Nominal Pipe Size / 2 in Outside Diameter / 2 3/8 in Overall Length / 6 in Pipe Weld Type / Electric Resistance Weld Resistance Properties / Corrosion-Resistant Schedule / Schedule 40 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 / ASTM A53, ASTM A733 Thread Configuration / Threaded on Both Ends