Midland Industries 59173SMLS Seamless Pipe Nipple Sch 80

Product Description

The MIDLAND INDUSTRIES 59173SMLS is a seamless black steel pipe nipple rated for demanding industrial and commercial piping applications. Manufactured to Schedule 80 wall thickness at 0.218 inches, this nipple measures 11 inches in overall length with a 2-inch diameter and carries a 300 lb pressure class rating of 2500 psi. Both ends feature 2-inch male pipe threads conforming to ANSI B1.20.1 with a thread length of 1.06 inches. The seamless construction eliminates a longitudinal weld seam, reducing the risk of stress concentration in high-pressure service. Licensed plumbers, pipefitters, and mechanical contractors install this type of fitting in gas, steam, and fluid distribution systems.

This pipe nipple is suited for residential and commercial black iron gas piping, steam distribution, and hydraulic fluid lines where higher pressure ratings are required. The SCH 80 extra-heavy wall designation makes it appropriate for systems operating at elevated pressures or temperatures, within a rated service range of -200 to 150 degrees F. It is a standard close-coupled connector used between valves, regulators, strainers, and other threaded fittings in 2-inch piping systems.

Key Features

• Seamless steel construction with no longitudinal weld seam for consistent wall integrity
• Schedule 80 extra-heavy wall at 0.218 inches for high-pressure service
• Rated to 2500 psi at 300 lb pressure class
• ANSI B1.20.1 thread standard on both 2-inch MPT ends
• Wide temperature service range: -200 to 150 degrees F
• Black finish suitable for gas and steam piping applications

Compatibility

Designed as an OEM-style replacement and standard component for 2-inch threaded black iron piping systems using Schedule 80 fittings and valves.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable mechanical and plumbing codes such as the IPC or IFGC. De-pressurize and isolate the piping system completely before removing or installing threaded nipples. Apply an approved pipe thread sealant or PTFE tape to the male threads before assembly; do not over-tighten, as this can damage threads or fittings. Gas piping installations must be leak-tested per local authority requirements before returning the system to service.