3/4 inch x 36 inch Black Steel Nipple

3/4" x 36" Black Steel Nipple – Built for High-Pressure Piping Systems

The 3/4" x 36" black steel nipple is engineered to extend pipe runs or facilitate connections in high-pressure plumbing and mechanical systems. Manufactured from welded black steel, this component provides a reliable solution for transporting natural gas, water, or hydronic fluids in commercial, residential, and industrial applications.

Key Features and Performance Benefits

• ✅ Standard Threaded Ends – National Pipe Taper (NPT) threads on both ends for consistent, pressure-tight assembly
• ✅ Material Strength – Constructed from Schedule 40 black steel for excellent performance in structural and fluid transport roles
• ✅ Length-Specific Application – 36-inch length ideal for bridging distances without the need for multiple joints or couplings
• ✅ High-Pressure Ready – Suitable for natural gas systems, oil distribution, and closed-loop hydronic heating configurations
• ✅ Corrosion-Resistant Finish – Black oxide coating protects against surface rust in indoor and sheltered applications

Technical Specifications

• Nominal Size: 3/4 inch
• Length: 36 inches
• Material: Welded black steel (Schedule 40)
• End Connections: NPT male thread x NPT male thread
• Applications: Natural gas, propane, oil, steam (non-potable), and hydronic water systems

Installation Guidance

Install using compatible female-threaded fittings or couplings. Apply appropriate thread sealant or PTFE tape on male threads to ensure a gas- or fluid-tight joint. Confirm thread alignment and proper torque during installation. For pressurized gas systems, conduct leak testing per local code requirements.

Common Use Cases

Widely used in mechanical room installations, natural gas distribution lines, steam risers, and industrial fluid systems. Its one-piece 36" length is often specified for minimizing joint count and maintaining consistent flow in longer straight runs.

Professional Insight

Black steel pipe nipples are commonly used where exposure to open flame, solder, or adhesives is impractical. The welded construction and uniform threading make this fitting dependable in both temporary and permanent system layouts.

For professionals working under pressure and demanding timelines, the 3/4" x 36" black steel nipple provides a standardized, reliable solution that integrates seamlessly into code-compliant systems.