1/2 inch x 18 inch Galvanized Steel Nipple

1/2" x 18" Galvanized Steel Pipe Nipple – Threaded Schedule 40 Connector

The 1/2" x 18" Galvanized Steel Nipple is a straight-line pipe fitting manufactured from Schedule 40 welded steel, hot-dip galvanized per ASTM A153 standards. Designed for general-purpose mechanical and plumbing applications, this nipple provides a threaded male-to-male connection between steel pipe systems requiring corrosion resistance and mechanical strength.

Produced in accordance with ASTM A733 for pipe nipples and featuring NPT (National Pipe Taper) threads per ANSI/ASME B1.20.1, this fitting is commonly used in water distribution, fire protection loops, compressed air systems, and light industrial applications where galvanized components are permitted by code.

Product Features

• ✅ Material: Welded carbon steel with hot-dip galvanized finish (ASTM A53, Type E or S)
• ✅ Thread Type: ANSI B1.20.1 NPT – tapered male threads at both ends
• ✅ Length: 18 inches overall
• ✅ Nominal Size: 1/2 inch
• ✅ Wall Thickness: Schedule 40

Installation Guidelines

This fitting is designed for mechanical joint applications and is compatible with standard steel pipe fittings and threaded valves. During installation, thread sealant or PTFE tape is required to ensure a fluid- or gas-tight seal. Pipe wrenches or mechanical threading tools should be used with care to avoid deformation of threads or overtightening. This product is not suitable for potable water systems unless otherwise certified as lead-free.

Typical Applications

The galvanized steel nipple is widely used in the following:

• • Low-pressure steam and condensate piping
• • Closed-loop hydronic heating circuits
• • Water and air distribution systems (non-potable)
• • Sprinkler and fire protection piping networks (where approved)
• • General-purpose piping connections in industrial settings

Compliance and Manufacturing Standards

• • Pipe Material: ASTM A53
• • Galvanizing: ASTM A153 / A123
• • Threads: ANSI/ASME B1.20.1
• • Nipple Fabrication: ASTM A733

Important Considerations

Galvanized steel is not recommended for corrosive environments with acidic or chloride-rich content and is not intended for direct connection to copper pipe due to dissimilar metal corrosion risk. Always confirm compatibility with local codes and project specifications before use.