Black Iron Nipple SCH 40

The Black Iron Nipple SCH 40 is a threaded connection made of Schedule 40 carbon steel, designed to securely and durably join pipe sections, valves, and threaded fittings in fluid and gas conveying systems. Its thick-walled SCH 40 construction provides excellent mechanical strength and durability for high-pressure applications. With NPT threads on both ends, it allows for quick installation, reliable sealing, and easy maintenance. Widely used in steam, gas, compressed air, and water systems where a robust and high-performance connection is required. Available in diameters from 1/2" to 2" NPT and lengths from 2" to 6".

Black Iron vs. Galvanized — When to use each?

• Black Iron SCH 40 (this product): Uncoated carbon steel. Ideal for steam, natural gas, LP gas, and high-temperature systems where galvanization may flake off and contaminate the fluid.
• Galvanized SCH 40: Steel with zinc coating. Ideal for potable water, industrial water, and humid environments where external corrosion protection is required.

Applications

• Industrial and commercial steam systems
• Natural gas and LP gas networks (where galvanization is not recommended)
• Compressed air networks and industrial pneumatic systems
• Conveyance of water and industrial fluids
• Connection of pipes, valves, and threaded fittings in industrial and commercial installations
• Construction, maintenance, and repair projects for high-pressure piping networks

Available Variants

• Diameters: 1/2" NPT / 3/4" NPT / 1" NPT / 2" NPT
• Lengths: 2" / 3" / 4" / 5" / 6"

Technical Specifications

• Type: Black iron nipple (threaded on both ends)
• Material: Carbon steel (black iron, uncoated)
• Schedule: SCH 40
• Thread: NPT (National Pipe Thread) on both ends
• Available diameters: 1/2" / 3/4" / 1" / 2" NPT
• Available lengths: 2" / 3" / 4" / 5" / 6"
• Finish: Black iron (uncoated, suitable for steam and gas)
• Brand / Distributor: Grindmel Honduras

Other Common Names

This product is also known as: black nipple NPT, black steel nipple, threaded black iron nipple, straight black pipe connector, black iron pipe nipple NPT, black steel nipple schedule 40, schedule 40 black nipple, or threaded black iron nipple NPT.