1-1/2 inch x 5 inch Black Steel Nipple

1-1/2" x 5" Black Steel Nipple – Threaded Schedule 40 Pipe Segment for Low- to Medium-Pressure Systems

The 1-1/2" x 5" Black Steel Nipple is a pre-cut, threaded Schedule 40 segment designed to join two female-threaded components in gas, oil, steam, or water piping systems where corrosion-resistant coatings are not required. Manufactured from carbon steel in accordance with ASTM A53 or equivalent standards, this nipple is suitable for general-purpose use in mechanical, industrial, and commercial plumbing environments.

Threads are machined to ANSI/ASME B1.20.1 National Pipe Taper (NPT) specifications, ensuring reliable mechanical engagement in rigid piping systems. Its black (uncoated) finish is typical for non-potable installations where environmental exposure is limited or where the pipe will be painted or otherwise protected.

Product Specifications

• Nominal Size: 1-1/2 inch
• Overall Length: 5 inches
• Material: Carbon Steel – Black Finish
• Wall Thickness: Schedule 40
• Thread Type: NPT – Tapered per ANSI B1.20.1
• Conformance: Meets ASTM A53, A733, or applicable pipe nipple standards

Installation Considerations

Prior to installation, pipe threads should be cleaned and sealed using an approved thread compound or PTFE tape. Over-tightening should be avoided to prevent thread damage or distortion. Nipples must be installed in systems supported per local mechanical code, and care must be taken to ensure proper alignment and load distribution.

Common Applications

Typically used in hydronic heating, compressed air, low-pressure gas distribution, and process piping systems. This nipple is suited for utility rooms, mechanical equipment tie-ins, riser extensions, and manifold configurations. It is not intended for potable water systems unless approved for use under local jurisdiction or coated accordingly.

Material and Usage Note

Black steel is uncoated and not corrosion-resistant in outdoor or wet environments. For applications requiring corrosion protection or exposure to moisture, galvanized or epoxy-coated alternatives should be considered. Black steel is often selected for indoor or enclosed environments where fire resistance, high strength, and pressure compatibility are primary concerns.

The 1-1/2" x 5" Black Steel Nipple is a standardized, threaded segment engineered for permanent, secure integration into code-compliant systems requiring rigid steel pipe continuity. Use only with compatible Schedule 40 fittings and in accordance with the governing mechanical or plumbing codes.