3 inch x 3 inch Black Steel Nipple

3" x 3" Black Steel Nipple – Fabricated for Demanding Piping Systems

The 3" x 3" Black Steel Nipple is constructed to support robust fluid or gas transfer in high-pressure, high-temperature systems. Manufactured from schedule 40 seamless black steel pipe, this fitting is cut and threaded to meet ANSI B1.20.1 standards, providing a durable and secure component for threaded pipe assemblies.

Fabrication and Performance Features

• ✅ Seamless Schedule 40 Steel – Provides enhanced mechanical strength for pressure-rated systems.
• ✅ Threaded Both Ends (TBE) – Male NPT threads ensure compatibility with standard iron pipe fittings and valves.
• ✅ Machined to ANSI Standards – Ensures tight tolerances and reliable fitment across a range of system configurations.
• ✅ Corrosion-Resistant Interior – Uncoated black finish suitable for non-potable systems and gas lines.
• ✅ Temperature and Pressure Resilience – Designed to withstand service conditions typical in commercial steam, HVAC, and industrial gas distribution applications.

Installation Parameters

Installation of the 3" x 3" black steel nipple should be conducted using appropriate pipe threading compound or PTFE tape to ensure leak-tight seals. Pipe wrenches must be used to tighten fittings without overstressing the threads. For critical systems, hydrostatic testing after installation is recommended to verify seal integrity.

Common Applications

• ● Natural gas and propane piping systems
• ● Hydronic heating loops and boiler header connections
• ● Compressed air systems in industrial facilities
• ● Closed-loop mechanical piping applications

Technical Specifications

• Material: Carbon Steel (ASTM A106 Grade B or equivalent)
• Nominal Size: 3 inch
• Length: 3 inch
• Wall Thickness: Schedule 40
• Thread Type: NPT per ANSI B1.20.1
• Pressure Rating: Dependent on system design; generally exceeds 150 psi in standard usage

Standards & Compliance

This fitting complies with ANSI and ASTM dimensional standards and is typically used in accordance with ASME B31.3 and B31.1 piping codes for mechanical and industrial systems. Not suitable for potable water systems without additional corrosion-resistant coatings.

Engineered for consistency and performance, the 3" x 3" Black Steel Nipple is a critical component for installations that demand high-pressure resilience, thermal stability, and mechanical reliability. Incorporate this fitting into your pipeline system to maintain structural integrity and code compliance in your next mechanical or gas infrastructure project.