3/4 inch x 72 inch Black Steel Nipple

3/4" x 72" Black Steel Nipple – Threaded Schedule 40 Pipe for High-Pressure Applications

The 3/4" x 72" Black Steel Nipple is a Schedule 40 welded steel pipe section with NPT threads on both ends, suitable for high-pressure fluid and gas conveyance. Manufactured to ASTM A53 or equivalent standards, this fitting is commonly used in industrial, commercial, and mechanical piping systems where durability and mechanical integrity are critical.

Technical Specifications

• Nominal Size: 3/4 inch
• Length: 72 inches (6 feet)
• Material: Welded black steel (ASTM A53 Type E or S)
• Wall Type: Schedule 40
• Ends: Male National Pipe Thread (NPT x NPT)
• Pressure Rating: Dependent on media, temperature, and system design
• Temperature Range: Suitable for ambient and elevated temperature services
• Application Standards: ANSI B1.20.1 (threads), ASME B31.1/B31.3 piping systems

Primary Uses

Black steel nipples of this size and type are used to extend pipe runs or connect components in systems where corrosion resistance is not a primary requirement. Common installations include:

• Natural gas and propane distribution lines
• Low- to medium-pressure steam and air piping
• Mechanical and HVAC piping systems
• Oil and petroleum service lines

Product Features

• ✅ Threaded Ends – Cut to ANSI B1.20.1 specifications for compatibility with standard threaded fittings
• ✅ Schedule 40 Wall Thickness – Suitable for general service pressure applications
• ✅ Carbon Steel Construction – Provides structural strength and dimensional stability
• ✅ Uncoated Finish – Ideal for use in gas lines where galvanization is not permitted

Installation Requirements

Thread sealant or PTFE tape should be applied to male threads prior to installation. Wrenches should be used with care to avoid thread deformation or over-tightening. Proper pipe support and alignment according to applicable codes (e.g., IPC, UPC, or local authority) are required to prevent mechanical strain on connections.

Note:

This product is intended for non-potable systems. Black steel is not suitable for drinking water or corrosive environments unless otherwise treated or specified.

The 3/4" x 72" Black Steel Nipple is a durable, code-appropriate solution for professional-grade gas, oil, and HVAC piping projects. Engineered to meet stringent system specifications, this fitting provides consistent performance in demanding mechanical environments.