1-1/2 inch x 72 inch Black Steel Nipple

1-1/2" x 72" Black Steel Nipple – Threaded Pipe Segment for Gas, Steam, and Water Distribution

The 1-1/2" x 72" Black Steel Nipple is a factory-threaded Schedule 40 carbon steel pipe section used to extend, connect, or transition between threaded fittings in mechanical piping systems. Suitable for non-potable applications, it is commonly deployed in gas distribution, steam service, compressed air, and industrial water systems where corrosion protection is not a primary requirement.

This nipple is manufactured from welded or seamless black steel pipe and cut to nominal length with NPT threads on both ends. The black finish offers limited resistance to rust and oxidation during storage and handling, and it is intended for dry, indoor use or systems with corrosion control provisions.

Performance Features

• ✅ Material: Schedule 40 carbon steel pipe, black coated (ASTM A53 or equivalent)
• ✅ Threading: Male National Pipe Thread (NPT) x NPT, per ANSI/ASME B1.20.1
• ✅ Nominal Size: 1-1/2 inch diameter
• ✅ Length: 72 inches (cut length may vary slightly based on threading allowance)
• ✅ Temperature Range: Suitable for systems operating up to 650°F (depending on application and sealant used)

Installation Considerations

Apply PTFE thread sealant tape or approved pipe dope to threaded ends prior to installation. Use appropriate torque to prevent over-tightening and preserve thread integrity. Do not use in potable water systems unless corrosion protection and approvals are specified. Verify compatibility with project requirements for pressure class and thermal expansion allowances.

Typical Applications

This fitting is commonly used in:

• Natural gas and LP gas distribution systems
• Low-pressure steam and return lines
• Compressed air systems
• Hydronic heating manifolds
• General industrial pipework for fluid transfer

Code and Specification Notes

Black steel nipples are generally manufactured in accordance with ASTM A733 and are typically constructed from A53 Grade A or B pipe. Always verify pressure rating and wall thickness compatibility for critical applications. Not for use in underground applications unless protected per code.

The 1-1/2" x 72" Black Steel Nipple provides a reliable, code-aligned solution for extending or connecting piping in threaded systems. Designed for mechanical durability and ease of integration into commercial and industrial piping assemblies.