1-1/4 inch x 5-1/2 inch Galvanized Steel Nipple

1-1/4" x 5-1/2" Galvanized Steel Nipple – Built for High-Integrity Pipe Connections

The 1-1/4" x 5-1/2" galvanized steel nipple is engineered for strength and performance in pressurized and non-pressurized piping systems. Manufactured from Schedule 40 welded steel and hot-dip galvanized to ASTM A153 standards, this nipple is ideal for use in potable water, air, oil, and other mechanical system applications.

Product Benefits

• Threaded MIP x MIP Ends: National Pipe Thread (NPT) standards ensure compatibility with a wide range of threaded galvanized pipe and fittings.
• Hot-Dip Galvanized Finish: Coated for corrosion resistance in above-ground and mildly corrosive environments, extending product life and reducing maintenance.
• Fabricated to Industry Specs: Manufactured to conform with ASTM A733 and ANSI B1.20.1 thread standards, ensuring accurate and secure mating with fittings.
• Full Bore Design: Maintains internal diameter for unimpeded flow and reduced pressure drop across the joint.
• Pressure Rated: Suitable for systems up to 300 PSI depending on service temperature and pipe support conditions.

Common Applications

This galvanized steel nipple is routinely used in water supply lines, compressed air systems, low-pressure gas distribution, and fire protection assemblies. It is suitable for indoor and exterior use where galvanized coating helps combat oxidation and scale formation.

Installation Notes

Apply pipe joint compound or PTFE tape to threads before tightening to ensure leak resistance. Always verify torque settings and use compatible fittings to avoid thread damage or joint misalignment. Use standard wrenches or pipe vises as needed during installation.

Technical Specifications

• Material: Welded Steel Pipe (Schedule 40)
• Finish: Hot-Dip Galvanized
• Size: 1-1/4" NPT x 5-1/2" Length
• Thread Type: Male NPT (ANSI B1.20.1)
• Standard Compliance: ASTM A733, ASTM A53 (for base pipe), ASTM A153 (galvanizing)

Did You Know?

Galvanized steel nipples are often preferred over black steel in water supply systems due to their added corrosion protection. The zinc coating provides a physical barrier and sacrificial layer to resist rust formation in moist environments.

Choose the 1-1/4" x 5-1/2" galvanized steel nipple when you need a heavy-duty, code-compliant fitting that performs under pressure. Its precise threads and durable finish make it a reliable choice for demanding mechanical and plumbing applications.