1/2 inch x 12 inch Black Steel Nipple

1/2" x 12" Black Steel Nipple – Threaded Pipe for Gas and Hydronic Systems

The 1/2" x 12" Black Steel Nipple is a schedule 40 welded steel pipe section with male NPT threads on both ends. Designed for use in natural gas, LP gas, and hydronic heating applications, this fitting is suited for above-ground installations in both residential and commercial systems.

Product Specifications

• Material: Welded carbon steel, ASTM A53 compliant
• Coating: Black oxide finish for corrosion resistance during storage and handling
• Nominal Size: 1/2 inch
• Length: 12 inches (measured end-to-end including threads)
• Thread Type: Male National Pipe Thread (NPT), tapered
• Pressure Rating: Suitable for low- to medium-pressure applications per ASME B31.3

Performance Benefits

• ✅ Durable Steel Construction – Fabricated from carbon steel pipe for strength and long-term service in mechanical systems.
• ✅ Precision Threading – Machined to ANSI B1.20.1 standards to ensure a tight seal and compatibility with fittings and valves.
• ✅ Versatile Usage – Commonly installed in gas piping, hydronic boiler loops, compressed air systems, and industrial piping networks.
• ✅ Welded Seam Integrity – Suitable for structural and pressure-bearing applications when properly installed and supported.

Installation Guidance

This nipple should be installed using appropriate sealing methods such as PTFE thread tape or thread compound to prevent gas or fluid leakage. Pipe wrenches or strap wrenches are typically used to achieve adequate thread engagement. Care must be taken not to over-torque to avoid thread damage or stress fractures in mating components.

Application Environments

Ideal for use in:

• Residential gas appliance supply lines
• Commercial HVAC loop transitions
• Industrial compressed air lines (non-potable)
• Hydronic and steam return configurations

Did You Know?

Black steel nipples are uncoated on the interior and are not rated for potable water applications. For systems involving drinking water, use galvanized or stainless steel alternatives in accordance with local plumbing codes.

The 1/2" x 12" Black Steel Nipple offers reliable threaded connectivity for pressure and gas distribution systems. Its robust construction and standardized threading make it a preferred component in mission-critical installations where reliability and code compliance are non-negotiable.