3 inch x 10 inch Black Steel Nipple

3" x 10" Black Steel Pipe Nipple – Schedule 40, NPT Threaded Ends

The 3" x 10" black steel pipe nipple is fabricated from Schedule 40 welded carbon steel pipe and machined with NPT (National Pipe Taper) threads on both ends. It is designed for use in low-pressure piping systems where rigid, leak-resistant threaded connections are required. This fitting is suitable for a range of mechanical, HVAC, and gas distribution systems.

Black steel nipples are commonly specified in non-potable water, natural gas, compressed air, and steam applications. They are manufactured in compliance with ASTM A53/A733 and ANSI B1.20.1 threading standards, ensuring dimensional accuracy and consistent sealing when properly installed with appropriate thread sealants.

Technical Specifications

• Nominal Size: 3" NPS (National Pipe Size)
• Length: 10" overall
• Material: Carbon steel (ASTM A53, Type E or S)
• Wall Thickness: Schedule 40
• Thread Type: Male NPT x Male NPT
• Finish: Black (uncoated for gas and oil applications)
• Pressure Rating: Dependent on system design and media; suitable for standard Class 150 systems

Application Areas

This pipe nipple is typically used in:

• • Fuel gas distribution systems (natural gas, propane)
• • Steam and hydronic heat supply lines
• • Low-pressure compressed air systems
• • Structural support and mechanical pipe connections

Installation Guidelines

Apply an approved thread sealant or PTFE tape to both threaded ends prior to assembly. Use appropriate torque to avoid damage to threads. Ensure the pipe is supported and aligned in accordance with applicable plumbing or mechanical codes to prevent strain at joints.

Material Note

Black steel pipe is not galvanized and is intended for use in systems where exposure to potable water or corrosive media is not anticipated. Its mechanical strength and thermal resistance make it a preferred choice for industrial and commercial utility installations.