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Contact Us 24/7, or call us at 1-844-740-5417 during business hours for the fastest response to your questions.

  • Products
    • Amerex
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    • Black Pipe Fittings
    • Buckeye
    • Chrome Fittings
    • Evergreen Quik Seals
    • Fire Equipment Gauges
    • Fire Extinguisher Cabinets
    • Fire Extinguisher Covers
    • Fire Extinguisher Hooks
    • Fire Extinguisher Pull Pins
    • Fire Extinguishers
    • Fire Hoses
    • Globe Fusible Links
    • Hole Punches
    • Hose Straps and Clips
    • Hydro Test/Recharge Adapters
    • Miscellaneous Parts
    • Nitrogen
    • O-Rings
    • Exclusive Customer Sale Items
    • Pyro Chem System Parts
    • Range Guard System Parts
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Black Pipe Fittings

Product Search

Category Other
Category Exclusive Customer Sale Items
Category Amerex
Category Amerex KP
Category Ansul
Category Black Pipe Fittings
Category Buckeye
Category Chrome Fittings
Category Evergreen Quik Seals
Category Fire Equipment Gauges
Category Fire Extinguisher Cabinets
Category Fire Extinguisher Covers
Category Fire Extinguisher Hooks
Category Fire Extinguisher Pull Pins
Category Fire Extinguishers
Category Fire Hoses
Category Globe Fusible Links
Category Hole Punches
Category Hose Straps and Clips
Category Hydro Test/Recharge Adapters
Category Miscellaneous Parts
Category Nitrogen
Category O-Rings
Category Pyro Chem System Parts
Category Range Guard System Parts
Category Service Verification Collars
Category Signs
Category Sprinkler Parts
Category System Components
Category Tamper Seals
Category Valve Stems
Category Vehicle Brackets

Showing 16–30 of 31 resultsSorted by latest



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  • 384.5Nip-25 Black Steel Pipe Nipples 3/8″X 4 1/2″ (Sold In Boxes Of 25)

    $1.60

    Brands: Generic

    Add to cart

  • 3840Nip-25 Black Steel Pipe Nipples 3/8″ X 4″ (Sold In Boxes Of 25)

    $1.30

    Brands: Generic

    Add to cart

  • black nipple 48 for fire security

    3848NIP Black Steel Pipe Nipples 3/8″X48″

    $20.85

    Brands: Generic

    Add to cart

  • 38UNION-EACH 3/8″ Union Pipe Fittings

    Rated 5.00 out of 5

    $5.95

    Brands: Generic

    Add to cart

  • 3/8 tee black pipe tees steel pipe

    38TEE-1 3/8″ Black Pipe Tees Steel Pipe Fitting

    Rated 5.00 out of 5

    $2.10

    Brands: Generic

    Add to cart

  • black steel pipe couplings used for fire security

    38COUP-EACH 3/8″ Black Pipe Couplings Steel Pipe Fitting

    $1.80

    Brands: Generic

    Add to cart

  • 38CLOSE-25 3/8″ Close Nipples (Sold In Boxes Of 25)

    Rated 5.00 out of 5

    $0.80

    Brands: Generic

    Add to cart

  • 3890ELB 3/8″ 90 Degree Elbow

    Rated 5.00 out of 5

    $1.45

    Brands: Generic

    Add to cart

  • 3860NIP-25 Black Steel Pipe Nipple 3/8″ X 6″ (Sold In Boxes Of 25)

    $2.05

    Brands: Generic

    Add to cart

  • 3850NIP-25 Black Steel Pipe Nipple 3/8″ X 5″ (Sold In Boxes Of 25)

    $1.65

    Brands: Generic

    Add to cart

  • 385.5NIP-25 Black Steel Pipe Nipple 3/8″ X 5 1/2″ (Sold In Boxes Of 25)

    $1.85

    Brands: Generic

    Add to cart

  • 3830NIP-25 Black Steel Pipe Nipple 3/8″ X 3″ (Sold In Boxes Of 25)

    $1.05

    Brands: Generic

    Add to cart

  • 383.5NIP-25 Black Steel Pipe Nipple 3/8″ X 3 1/2″ (Sold In Boxes Of 25)

    $1.10

    Brands: Generic

    Add to cart

  • 3820NIP-25 Black Steel Pipe Nipple 3/8″ X 2″ (Sold In Boxes Of 25)

    Rated 5.00 out of 5

    $0.90

    Brands: Generic

    Add to cart

  • 382.5NIP-25 Black Steel Pipe Nipple 3/8″ X 2 1/2″ (Sold In Boxes Of 25)

    Rated 5.00 out of 5

    $1.00

    Brands: Generic

    Add to cart

Viewing 30 of 31


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

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.

Have Questions?

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844-749-2313

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