Black Pipe Fittings

Black steel pipes are a crucial component of fire safety systems, forming the backbone of a flame-control system that helps limit the spread potential. High-quality fittings ensure a snug fit that promotes proper flow while withstanding the harsh operating environments and high temperatures a fire event creates. National Fire Supply offers a comprehensive range of fittings to meet your system’s needs.

About Our Black Pipe Fittings Inventory

We keep numerous 3/8-inch black pipe fittings in stock and ready for fast delivery.

Our black pipe nipple is available in these diameters:

• 1.5 inch
• 2 inches
• 2.5 inches
• 3 inches
• 3.5 inches
• 4 inches
• 4.5 inches

Order in lengths up to 48 inches, and design your custom system with additional connectors, like:

• 45-degree and 90-degree black pipe elbows
• 3/8-inch black iron pipe couplings and union pipe fittings
• 3/8-inch close nipples
• 3/8-inch black pipe tee fittings

FAQs: Black Pipe Fittings for Fire Protection Equipment

Here are answers to some of the most common questions we receive about our black pipe fittings.

What Are Black Pipe Fittings Used for in Fire Protection Systems?

Black pipe fittings are used to securely connect sections of steel pipe in fire protection systems. They’re especially common in standpipe and fire sprinkler installations due to their resistance to corrosion and rust.

What Sizes of Black Pipe Fittings Are Available?

Black pipe fittings are available from our online store with a nominal pipe size (NPS) of 3/8 inch.

We also offer nipple sizes ranging from 1.5 inch to 4.5 inches, and lengths up to 48 inches. We can also help you design a custom fire suppression system with additional connectors and components for unique projects if needed.

Are Black Pipe Fittings Corrosion-Resistant?

Yes, black pipe fittings are corrosion-resistant due to the blackened steel coating. This carbon-rich coating enhances the pipe’s ruggedness and heat resistance, making it suitable for use in a wide variety of environments and applications:

• Water supply lines
• Fire sprinkler systems
• Building structures
• Plumbing systems
• Gas pipelines

While they are corrosion-resistant, rust can build up if left unattended for too long. Proper maintenance is critical for keeping your pipes in good condition.

Can I Use Black Pipe Fittings for Both Wet and Dry Sprinkler Systems?

Yes, you can use black pipe fittings for both wet and dry sprinkler systems. For more information on system compatibility for any of our black pipe fittings, please contact our team.

How Should Black Pipe Fittings Be Maintained?

Black pipe fittings should be maintained regularly based on findings from periodic inspections. Some action items you might need to take care of include:

• Trimming nearby vegetation
• Checking for leaks
• Applying a protective coating
• Cleaning debris buildup

While proactive maintenance is key, you’ll also want to have a licensed fire protection technician inspect your pipes at least once annually. See NFPA 25 for more on inspecting, maintaining and testing water-based fire protection systems.

Partner With National Fire Supply for Your Black Pipe Fittings

We’re an experienced online retailer specializing in meeting the needs of fire safety professionals nationwide with fast shipment and exceptional customer experiences. As a National Association of Fire Equipment Distributors-certified company, our team proudly offers cost-effective pricing on various fire equipment solutions.

Contact us for buying assistance, or place your secure order online today.