3/4 inch Black Steel Nipple Run (Close to 6 inch)

Black Steel Nipple – Standard Threaded Connector for Gas, Air, and Water Systems

The black steel nipple is a threaded pipe section used to join two fittings or extend piping runs in low- to medium-pressure applications. Manufactured from carbon steel and finished with a black oxide coating, it is suitable for use in gas, air, steam, and hydronic systems where corrosion resistance from galvanization is not required.

Each nipple is precision-cut and threaded to ANSI/ASME B1.20.1 NPT standards, allowing consistent thread engagement and joint integrity across compatible iron and steel piping systems. These components are commonly found in mechanical rooms, process lines, and utility infrastructure where structural rigidity and code-compliant materials are essential.

• ✅ Threaded Ends – NPT male threads on both sides ensure compatibility with standard iron pipe fittings and valves.
• ✅ Carbon Steel Construction – Provides high tensile strength and pressure tolerance in industrial environments.
• ✅ Black Coating – Oil-coated surface minimizes oxidation during handling and short-term storage; not intended for potable water use.

Technical Specifications

• Material: Carbon Steel (Black Finish)
• Connection: Male NPT x Male NPT
• Standards: ANSI/ASTM A733 for pipe nipples; Threads per ASME B1.20.1
• Pressure Rating: Dependent on schedule and application; consult pipe specification
• Application: Natural gas, compressed air, oil, and closed-loop hydronic systems

Common Applications

Used in gas distribution lines, boiler piping, air compressor setups, and industrial fluid conveyance systems. Suitable for indoor use in mechanical spaces or sheltered exterior locations when installed in accordance with local codes.

Material Performance

Black steel offers excellent mechanical strength and weldability, making it a preferred choice in applications where galvanization is not necessary. Not recommended for use with water intended for human consumption due to corrosion potential and coating type.

The black steel nipple is a standard component in threaded pipe assemblies, delivering structural reliability and ease of installation in pressure-rated piping systems. Ensure thread engagement with pipe dope or PTFE tape as required to meet system pressure and seal requirements.