1 inch x 72 inch Black Steel Nipple

1" x 72" Black Steel Pipe Nipple – Threaded Schedule 40 Carbon Steel

The 1" x 72" black steel nipple is a full-length Schedule 40 welded carbon steel pipe section with precision-cut NPT threads on both ends. It is engineered for use in industrial and commercial piping systems requiring rigid, high-pressure connections. This fitting meets dimensional and material specifications outlined in ASTM A733 and ASTM A53 standards.

With its extended 6-foot length, this nipple is suitable for long pipe runs or custom configurations in mechanical systems where strength, reliability, and threaded compatibility are required. Threads are machined to ANSI B1.20.1 specifications, allowing for a secure, leak-resistant fit with other ferrous or malleable iron components.

Performance Features

• ✅ Schedule 40 Wall Thickness – Rated for use in pressurized systems including air, gas, and oil distribution
• ✅ Machined NPT Threads – Tapered male threads ensure tight mechanical seals when used with approved thread sealants
• ✅ Rigid and Straight – Provides structural stability over long distances, ideal for suspended runs or support brackets
• ✅ Black Finish – Uncoated steel for indoor use or systems where corrosion protection is managed separately

Technical Specifications

• Nominal Pipe Size: 1 inch
• Length: 72 inches (6 feet)
• Material: Welded carbon steel pipe, ASTM A53 Grade A or B
• Thread Type: NPT (male) on both ends
• Standard: Meets ASME B1.20.1 and ASTM A733 dimensional tolerances

Application Environments

This black steel nipple is commonly specified for the following system types:

• Natural gas and propane distribution piping
• Steam and condensate return systems
• Hydronic heating loops
• Low-pressure air and oil service lines

Installation Guidance

Use of PTFE thread tape or a compatible pipe joint compound is required to ensure a pressure-tight seal. For optimal performance, thread engagement should be 3.5 to 5 full turns past finger-tight. All installations should follow the latest IPC/UPC and ASME B31.1 or B31.3 guidelines as applicable.

Important Consideration

Black steel pipe should not be used for potable water applications unless properly lined or coated per local code requirements. For corrosive environments, alternative materials such as galvanized or stainless steel may be more appropriate.

The 1" x 72" black steel nipple offers a dependable solution for high-integrity threaded connections in demanding system configurations. It provides the strength, dimensional accuracy, and pressure-resistance required by professional tradespeople across a range of mechanical applications.