1-1/2 inch x 7 inch Black Steel Nipple

1-1/2" x 7" Black Steel Nipple – Standard Schedule 40 Welded Pipe Fitting

The 1-1/2" x 7" black steel nipple is manufactured from Schedule 40 welded carbon steel pipe and threaded to ANSI B1.20.1 standards for tapered pipe threads. Designed for use in low- to medium-pressure gas, air, and water systems, this fitting provides a rigid and reliable extension between two female-threaded components.

Commonly specified in both commercial and industrial mechanical systems, black steel nipples are suitable for applications that do not involve potable water due to the absence of an internal corrosion-resistant lining. This component is ideal for joining valves, tees, elbows, and other fittings within HVAC systems, boiler piping, compressed air networks, and fuel gas distribution lines.

Product Features

• ✅ Material: Carbon steel pipe with black oxide coating for light surface protection
• ✅ Thread Type: NPT (National Pipe Tapered) ends for mechanical sealing
• ✅ Wall Thickness: Standard Schedule 40 pipe dimensions
• ✅ Length: 7-inch overall length including thread engagement
• ✅ Manufacturing Method: Cut and threaded from ASTM A53 or A106 pipe stock

Installation Notes

Use with appropriate thread sealant or PTFE tape to ensure leak-free operation. Proper wrench engagement at the hex or pipe body is required to avoid thread damage. Always confirm compatibility with adjoining materials and system pressure requirements.

Typical Applications

• Gas supply systems (natural gas, propane)
• Hydronic heating and closed-loop systems
• Air compressor lines
• Industrial process piping (non-potable)

Important Consideration

Black steel pipe and nipples are not approved for use in drinking water systems as they are not lined and may corrode internally over time. Use galvanized or approved alternatives for potable water applications.

Compliance and Standards

• Manufactured in accordance with ASTM A53 / A106
• Threads conform to ANSI/ASME B1.20.1
• Meets common municipal specifications for gas piping

This 1-1/2" x 7" black steel nipple offers reliable performance for structural and mechanical joining in industrial and residential environments. With its standard threading and proven pressure-handling capability, it provides an efficient solution for rigid pipe extensions in non-corrosive systems.