1-1/2 inch x 48 inch Black Steel Nipple

1-1/2" x 48" Black Steel Nipple – Schedule 40 Threaded Pipe Segment for Gas, Air, and Utility Systems

The 1-1/2" x 48" Black Steel Nipple is a schedule 40 carbon steel pipe section with male National Pipe Taper (NPT) threads on both ends. Manufactured from ASTM A53 welded or seamless pipe, this nipple is used for joining components in mechanical, hydronic, and fuel gas piping systems that require a 48-inch extension without field threading or cutting.

Finished with a black oxide coating, the fitting provides moderate corrosion resistance during handling and installation. It is intended for use in non-potable systems and above-ground indoor applications such as boiler piping, industrial gas manifolds, and compressed air systems.

Product Features

• ✅ Schedule 40 Wall Thickness – Compatible with standard steel, malleable iron, or forged pipe fittings.
• ✅ Threaded NPT Ends – Cut to ANSI B1.20.1 standards to ensure a leak-resistant connection with proper sealing material.
• ✅ Black Steel Construction – Made from ASTM A53/A106 Grade A or equivalent carbon steel for strength and reliability.
• ✅ 48-Inch Length – Provides an extended reach in long-run pipe sections or equipment hookups.
• ✅ Application Versatility – Suitable for natural gas, low-pressure steam, air, and general-purpose utility lines.

Technical Specifications

• Nominal Size: 1-1/2 inch
• Length: 48 inches
• Material: Carbon Steel with black oxide finish
• Thread Type: NPT (Male x Male)
• Standards: ASTM A53 / A106; ASME B36.10M; Threads per ANSI B1.20.1

Installation Guidelines

Use a pipe wrench to tighten the nipple into mating threaded fittings. Apply PTFE thread sealant or approved pipe compound on male threads to ensure a pressure-tight joint. Do not overtighten, as thread deformation can lead to system leaks or connection failure. Not intended for use in potable water systems without additional coating or lining.

Application Use Cases

Commonly installed in gas piping systems, mechanical equipment connections, boiler loops, and industrial utility piping. This nipple is suitable for use in regulated fuel gas systems when installed per local and national code, including NFPA 54.

Regulatory Note

Verify system compatibility and confirm all components meet project specifications and code requirements prior to installation. Not recommended for underground use unless appropriately coated or protected against corrosion.