1 inch x 5 inch Black Steel Nipple

1" x 5" Black Steel Pipe Nipple – Threaded Schedule 40 for Low-Pressure Systems

The 1" x 5" Black Steel Nipple is a Schedule 40 carbon steel fitting used for joining two female-threaded pipe components in mechanical and plumbing systems. It is manufactured from seamless or welded steel pipe and threaded to ANSI B1.20.1 specifications to ensure compatibility with standard threaded systems in air, gas, and water applications (non-potable).

Designed for use in low- to moderate-pressure installations, this nipple is commonly installed in heating circuits, compressed air systems, fire protection loops (where code permits), and closed hydronic loops. The black finish indicates that the nipple is uncoated and not suitable for potable water systems or corrosive environments without additional protection.

Product Features

• ✅ Material: Carbon steel, black finish (ASTM A106, A53, or equivalent)
• ✅ Size: 1" nominal pipe size x 5" overall length
• ✅ Connection Type: Male NPT threads on both ends
• ✅ Wall Thickness: Schedule 40
• ✅ Threading Standard: ANSI/ASME B1.20.1

Installation Requirements

Threads should be cleaned and sealed using pipe joint compound or PTFE tape per system requirements. Avoid excessive torque to prevent thread deformation. For pressure-rated applications, follow torque guidelines provided by the pipe fitting or system manufacturer. All nipples should be supported in accordance with local mechanical and plumbing code requirements to avoid undue strain on the connections.

Application Scope

This component is typically used in black steel piping networks for HVAC systems, oil burners, steam distribution, and gas supply systems (where allowed by code). It serves as a rigid coupling extension where precise alignment and a short extension of the pipeline is required. Not intended for direct burial or potable water systems unless specified as coated or galvanized.

Material Use and Limitations

Black steel pipe nipples are uncoated and best suited for indoor use in dry conditions. For installations exposed to moisture, a corrosion-resistant coating or an alternative material (e.g., galvanized steel or stainless steel) should be considered to maintain long-term performance.

The 1" x 5" Black Steel Nipple is a standard component for contractors working with low-pressure systems requiring reliable threaded connections. Its compliance with dimensional standards ensures a consistent fit in steel pipe assemblies.