1/2 inch x 18 inch Black Steel Nipple

1/2” x 18” Black Steel Nipple – Threaded Pipe for High-Integrity Line Extensions

This 1/2" x 18" black steel nipple is designed for use in pressurized piping systems requiring rigid extensions and secure male-threaded transitions. Constructed from schedule-rated black steel, it supports a wide range of mechanical, gas, and hydronic applications in residential, commercial, and light industrial environments.

Threaded on both ends with NPT-compatible threads, this nipple provides a dependable connection between pipe sections, valves, or fittings. Its seamless design and uniform wall thickness are optimized for handling internal pressure and temperature changes associated with fuel gas or fluid conveyance systems.

Application-Driven Features

• ✅ Black Steel Construction – Manufactured for mechanical durability and thermal resistance in non-potable water, air, or gas systems.
• ✅ Accurate NPT Threads – Threaded ends conform to industry standards to ensure tight sealing interfaces during assembly.
• ✅ Fixed-Length Extension – 18” length ideal for spacing applications or offset alignments in confined areas.
• ✅ Weld-Free Pipe Body – Seamless construction minimizes weak points and supports uniform stress distribution along the pipe wall.
• ✅ Pressure-Rated for System Safety – Meets standard performance thresholds for low- to mid-pressure environments.

Technical Specifications

• Nominal Pipe Size: 1/2 inch
• Length: 18 inches
• Thread Type: NPT Male x Male
• Material: Black carbon steel, schedule 40
• Manufacturing: Seamless pipe per ASTM specifications

Installation Considerations

Use of thread sealant or PTFE tape is recommended to maintain seal integrity during system pressurization. Ensure threads are not over-torqued to prevent deformation. Compatible with black iron or malleable iron fittings, valves, and couplings for system continuity.

Use Cases

This pipe nipple is suitable for black steel piping systems such as natural gas distribution, air compressor lines, oil transfer loops, and other mechanical utility layouts. Its consistent diameter and rigidity also make it suitable for fixture offsets and sectional maintenance access.

Material Characteristics

Black steel nipples are selected for their high tensile strength, corrosion tolerance (in closed systems), and weld-free pipe integrity. Their heat-treated surface and carbon content support performance in elevated temperature applications and variable flow conditions.

Specifying this black steel nipple ensures compatibility with jobsite-grade components and installation practices. Designed for consistent results in code-compliant builds, it’s a dependable option for system extension and pressure-rated service continuity.