Premium Black Steel Pipe Nipple (Size 1/2“ / 3/4”/ 1")
Engineered specifically for heavy-duty natural gas, LP (liquid propane), compressed air, and mechanical piping networks, our Premium Black Steel Pipe Nipples provide a reliable, high-strength solution for extending pipe runs or connecting closely spaced fittings. Manufactured from premium seamless or electric-resistance welded schedule 40 carbon steel pipe, these short conduit lengths are built to handle intense system pressures, physical vibration, and heavy structural torque.
Featuring precision-cut external National Pipe Taper (NPT) threads on both ends, these nipples ensure an exceptionally tight mechanical wedge fit when threaded into female fittings, valves, or appliance ports. Every nipple is thoroughly deburred and factory pressure-tested to guarantee safe and leak-free operation behind walls or overhead in plenum spaces.
Key Features and Benefits
Schedule 40 Carbon Steel Strength: Manufactured from high-grade carbon steel conforming to ASTM A53 standards, delivering excellent tensile strength and wall integrity. It will not distort or crush under heavy pipe wrench installation torque.
Precision-Tapered NPT Threads: CNC-machined to strict ASME B1.20.1 standards on both ends. The smooth, deep-cut external threads allow thread sealants or tape to distribute uniformly, creating a gas-tight and water-tight seal that completely eliminates bypass leaks.
Clean Interior and Deburred Ends: Precision-cut and reamed to ensure a smooth internal bore with no burrs or sharp metal fragments, maintaining optimal fluid flow and protecting inline equipment from debris damage.
Naturally Finished Black Coating: Treated with a raw black oxide finish and a light factory oil coat to provide dependable storage protection against atmospheric humidity and oxidation before job-site installation.
Industry Code and Safety Compliant: Meets all manufacturing metrics of ASTM A733, ensuring it fully satisfies strict local municipal mechanical and gas plumbing building codes.
Technical Specifications
Fitting Profile: Threaded Straight Pipe Nipple (Male NPT x Male NPT)
Material Standard: ASTM A53 / A53M Grade B Carbon Steel (Schedule 40 Wall Thickness)
Manufacturing Standard: ASTM A733 (Welded and Seamless Carbon Steel and Stainless Steel Pipe Nipples)
Thread Specification: ANSI / ASME B1.20.1 National Pipe Taper External Threads
Pressure and Temperature Ratings: Rated for up to 300 PSI at 150 degrees Fahrenheit, or 150 PSI at 300 degrees Fahrenheit
Fluid Compatibility: Natural gas, liquid petroleum (LP) gas, compressed air, oils, steam, and non-potable closed loops (Note: Not for use in domestic potable water lines due to rust risks).
Ideal Applications
Extending Gas Supply Lines from Main Headers to Appliance Regulators and Valves
Connecting Close-Proximity Fittings in Overhead Compressed Air Manifolds and Loop Drops
Fabricating Custom Meter Connections, Gas Traps, and Mechanical Header Assemblies
Connecting Gas Pipeline Infrastructure Loops to Commercial Boilers, Furnaces, and Water Heaters
