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This Anvil nipple features seamless construction that provides excellent protection against leaks. Thicker walls allow use in higher-pressure applications than Schedule 40 nipples. For use in high pressure applications with air, water, oil, natural gas, and steam. Manufactured per ASTM A733 with NPT threads per ASME .1 and material per ASTM A106. This listing is for each. Technical Specification Item Nipple Application Air, Gas, Non-Potable Water, Oil, Steam Finish/Coating Black Anodized Fitting Compatibility Schedule 80 Inside Diameter 6 in Material Steel Material Grade Grade B Maximum Operating Pressure 1000 psi @ 150 Degrees F Maximum Steam Pressure 300 psi @ 550 Degrees F Metal Pipe Construction Seamless Nominal Pipe Size 6 in Outside Diameter 6 5/8 in Overall Length 11 in 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 ASTM A106 Grade B, ASTM A733 Thread Configuration Threaded on Both Ends Wall Thickness 0.422 in