Mueller Industries 584-300 Black Pipe 3/4 in X 30 in Std

Product Description

The MUELLER INDUSTRIES 584-300 is a pre-cut, threaded black pipe nipple designed for use in gas, steam, and water distribution piping systems. Manufactured from ASTM A-53 carbon steel using a welded process, this pipe section measures 3/4 inch nominal diameter and 30 inches in length. The black oxide finish provides a baseline level of corrosion resistance suitable for dry and low-humidity interior applications. Threads are cut to ANSI B1.20.1 standards, ensuring consistent fit with standard NPT fittings. The STD schedule wall thickness meets typical load and pressure requirements for residential and light commercial plumbing and mechanical piping runs. Licensed plumbers and pipefitters are the primary installers.

This pipe section is used in residential and light commercial applications where threaded black steel pipe is the specified material. Common uses include natural gas distribution lines, steam heating supply and return lines, and general water service piping where black steel is code-appropriate. The 30-inch pre-cut length reduces field cutting time when standard nipple lengths are not sufficient but a full stick of pipe is unnecessary. The 584 series from Mueller Industries covers a range of pre-cut lengths in standard nominal pipe sizes for this type of work.

Key Features

• ASTM A-53 carbon steel construction meets standard material requirements for gas and steam piping
• Threads conform to ANSI B1.20.1 for reliable NPT fitting engagement
• Welded pipe construction with STD schedule wall thickness
• Black oxide finish suitable for interior, above-ground piping installations
• Pre-cut 30-inch length reduces field fabrication time
• 3/4 inch nominal size covers a widely used diameter in residential and commercial mechanical systems

Compatibility

Designed as a standard-thread replacement or new-installation pipe section for 3/4 inch NPT threaded fittings, valves, and couplings used in gas, steam, and water piping systems where ASTM A-53 carbon steel is specified.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, IFGC requirements for gas piping, and IPC requirements for plumbing systems. Shut off all gas or fluid supply and verify zero pressure in the line before beginning work. Apply appropriate thread sealant or listed pipe thread compound to male threads before assembly. Do not use black oxide pipe in direct-burial or continuously wet environments without additional corrosion protection.