1-1/4 inch x 18 inch Galvanized Steel Nipple

1-1/4" x 18" Galvanized Steel Nipple – Threaded Pipe Connector for Industrial and Mechanical Systems

The 1-1/4" x 18" Galvanized Steel Nipple is a straight pipe section with male National Pipe Thread (NPT) ends, fabricated to facilitate inline connections between compatible threaded components in mechanical, plumbing, and hydronic systems. Manufactured to ASTM A53/A733 standards, this nipple is suitable for applications involving potable water (when approved), low-pressure steam, oil, or air systems.

Hot-dip galvanization provides an external zinc coating that enhances corrosion resistance in non-submerged environments. The fitting is machined to ensure thread accuracy and pressure-tight sealing when installed using appropriate joining methods such as PTFE thread seal tape or pipe joint compound.

Product Highlights

• ✅ ASTM-Compliant Fabrication – Constructed to meet dimensional and material specifications per ASTM A733 (nipple standard) and A53 (pipe specification).
• ✅ Hot-Dip Galvanized – Provides a zinc barrier layer against oxidation and environmental exposure, extending service life in above-ground installations.
• ✅ Threaded NPT Ends – ANSI B1.20.1 standard threading ensures compatibility with other Schedule 40 steel or galvanized fittings.
• ✅ Schedule 40 Wall Thickness – Suitable for moderate pressure requirements typical of water and air handling systems.
• ✅ Uniform Length – 18-inch overall length for use in extended reach pipe runs or spacing requirements.

Recommended Applications

This galvanized steel nipple is commonly used in:

• Potable and non-potable water systems (verify local code approval)
• Low-pressure compressed air networks
• Cooling tower and HVAC loop installations
• General mechanical and piping support frameworks

Installation Notes

To ensure system integrity:

• Use pipe wrenches or chain tongs suitable for galvanized materials.
• Apply thread sealant compatible with the service medium (oil, water, or air).
• Avoid over-torque to reduce thread deformation or stress cracking of mating components.

Specifications

• Nominal Pipe Size: 1-1/4 inch
• Length: 18 inches
• Thread Type: NPT – ANSI B1.20.1
• Material: Carbon steel, hot-dip galvanized per ASTM A123
• Wall Thickness: Schedule 40

This fitting meets the structural and mechanical demands of professional installations where a corrosion-resistant threaded extension is required. It is not suitable for underground burial without further protection or for high-temperature steam service. Always verify compatibility with fluid media and local code requirements prior to installation.