3/8 inch x 4 inch Galvanized Steel Nipple

3/8" x 4" Galvanized Steel Nipple – Threaded Pipe Connector for General Utility Systems

The 3/8 inch x 4 inch Galvanized Steel Nipple is a straight, threaded pipe segment used for connecting female-threaded components in low- to medium-pressure systems. Manufactured from carbon steel and hot-dip galvanized for enhanced corrosion resistance, this nipple is suitable for both indoor and outdoor service in mechanical, plumbing, and utility installations.

Designed to meet dimensional and threading standards, it provides reliable performance where rigid, straight pipe connections are needed between valves, tees, elbows, or system extensions.

Key Features

• ✅ Material: Welded or seamless carbon steel with zinc galvanization for corrosion protection.
• ✅ Thread Type: Male National Pipe Thread (NPT) on both ends – per ANSI/ASME B1.20.1 standards.
• ✅ Length: 4 inches overall – ideal for spacing between components or bridging short pipe runs.
• ✅ Service Use: Compatible with water, air, oil, or gas lines in non-potable applications.
• ✅ Finish: Hot-dip galvanized coating for resistance to rust and exposure-related deterioration.

Applicable Standards

• ASTM A733: Standard specification for pipe nipples, including threading and dimensional tolerance
• ANSI/ASME B1.20.1: Thread specification for tapered pipe threads
• Service Class: Non-potable mechanical and plumbing systems

Installation Recommendations

Apply PTFE tape or compatible thread sealant to each male thread before installation. Engage threads hand-tight, then tighten with a wrench until secure. Avoid over-tightening to preserve thread integrity. This nipple is not intended for potable water systems unless otherwise certified for such use.

Use Cases

Typical applications include connecting pipe runs in compressed air systems, hydronic heating circuits, fire protection risers, or general-purpose water distribution (non-drinking). The galvanized finish extends service life when exposed to moisture or atmospheric humidity.

Material Note

Galvanized steel fittings are chosen for their strength and corrosion resistance in environments where black steel would oxidize or degrade. They are not recommended for chemically aggressive fluids or systems operating at elevated temperatures unless specified.

The 3/8" x 4" Galvanized Steel Nipple delivers dependable performance in threaded pipe assemblies that require rigid, corrosion-resistant connectors. Its adherence to industry fabrication and coating standards ensures suitability for professional-grade installation environments.