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Charlotte area contractor supply store | Fast pickup | Local delivery available | Call 704-835-1086
Charlotte contractor supply store | Fast pickup | Local delivery available | Call 704-835-1086
Black Steel Fittings - Couplings & Reducing Couplings

Black Steel Fittings - Couplings & Reducing Couplings

Complete your gas, fire suppression, or industrial piping system with black steel malleable iron fittings — the standard choice wherever threaded steel pipe connections are required. Built tough for high-pressure and high-temperature applications, black steel fittings are a staple on every commercial and residential gas line rough-in.

What Are Black Steel Fittings?

Black steel fittings are malleable iron threaded fittings with a black oxide finish (no galvanizing). They are designed for use with black steel pipe on natural gas, propane, fire sprinkler, steam, and compressed air systems. The black finish distinguishes them from galvanized fittings, which are not suitable for gas service.

Fitting Types Available

  • Elbows — 90° and 45° in street and standard configurations
  • Tees — straight and reducing tees for branch connections
  • Couplings — standard and reducing for inline connections
  • Nipples — close, short, and long in common sizes
  • Caps & Plugs — for capping open ends and pressure testing
  • Unions — for connections that may need to be broken and remade
  • Bushings — for reducing threaded connections

Common Applications

  • Natural gas and propane distribution lines
  • Fire suppression and sprinkler systems
  • Steam and high-temperature piping
  • Compressed air systems
  • Industrial process piping

Key Specs

  • Material: Malleable iron with black oxide finish
  • Thread standard: NPT (National Pipe Thread)
  • Pressure rated: 150 lb class (standard) — suitable for most gas and steam applications
  • Sizes: 1/4" through 2" (common stock sizes)
  • Not for use with galvanized pipe on gas lines — always use black fittings with black pipe for gas service

Same-day pickup available at AC Construction Depot in Pineville, NC. Serving plumbers, pipefitters, and contractors across the greater Charlotte area. Call us at 704-835-1086 to confirm availability on specific sizes and configurations before your trip.

Filtros

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$4.87 - $4.87
$4.87
$4.87 - $4.87
$4.87

Acoplamiento reductor de hierro negro Southland - 3/4" x 1/2"

Acoplamiento reductor de hierro negro Southland - 3/4" x 1/2" Modelo: 521-343HN SKU: ACPI15913759 TAPA: D9-3

$4.87 - $4.87
$4.87
$4.87 - $4.87
$4.87
$4.78 - $4.78
$4.78
$4.78 - $4.78
$4.78

Acoplamiento de hierro negro Southland - 3/4"

Acoplamiento de hierro maleable negro B&K/Mueller Southland - 3/4 pulg. Modelo: 521-204HN/103683 SKU: ACPI15914195 TAPA: D9-3

$4.78 - $4.78
$4.78
$4.78 - $4.78
$4.78
$2.67 - $2.67
$2.67
$2.67 - $2.67
$2.67

STZ Industries Black Iron Coupling - 3/4"

STZ Industries Black Iron Coupling - 3/4" Model: 312CO-34?? 502054 SKU:?? LID: D9-3

$2.67 - $2.67
$2.67
$2.67 - $2.67
$2.67
$6.79 - $6.79
$6.79
$6.79 - $6.79
$6.79

Reductor de acoplamiento de hierro negro Southland - 1" x 3/4"

Reductor de acoplamiento de hierro negro Southland - 1" x 3/4" Modelo: 521-354HN SKU: ACPI15913767 TAPA : D9-2

$6.79 - $6.79
$6.79
$6.79 - $6.79
$6.79
$2.89 - $2.89
$2.89
$2.89 - $2.89
$2.89

Acoplamiento de hierro negro Southland - 1/2"

Acoplamiento de hierro negro Southland - 1/2" Modelo: 521-203HN SKU: ACPI15914187 TAPA : D9-3

$2.89 - $2.89
$2.89
$2.89 - $2.89
$2.89
$9.18 - $9.18
$9.18
$9.18 - $9.18
$9.18

Acoplamiento de hierro negro Southland - 1-1/4"

Acoplamiento de hierro negro Southland - 1-1/4" Modelo: 521-206HN SKU: ACPI15914211 TAPA: D9-1

$9.18 - $9.18
$9.18
$9.18 - $9.18
$9.18
$3.49 - $3.49
$3.49
$3.49 - $3.49
$3.49

Acoplamiento de hierro negro Southland - 1"

Acoplamiento de hierro negro Southland - 1" Modelo: 521-205HN SKU: ACPI15914203 TAPA: D9-2

$3.49 - $3.49
$3.49
$3.49 - $3.49
$3.49
$12.76 - $12.76
$12.76
$12.76 - $12.76
$12.76

Acoplamiento de hierro negro Southland - 1-1/2"

Acoplamiento de hierro negro Southland - 1-1/2" Modelo: 521-207HN SKU: ACPI15914229 TAPA: D8-2

$12.76 - $12.76
$12.76
$12.76 - $12.76
$12.76
$17.93 - $17.93
$17.93
$17.93 - $17.93
$17.93

Acoplamiento reductor negro Southland Mueller - 2" x 1"

Acoplamiento reductor negro Southland Mueller - 2" x 1" Modelo: 521-385HC SKU: ACPI15913296 TAPA: D8-1

$17.93 - $17.93
$17.93
$17.93 - $17.93
$17.93
$16.18 - $16.18
$16.18
$16.18 - $16.18
$16.18

Acoplamiento de hierro negro Southland - 2"

Acoplamiento de hierro negro Southland - 2" Modelo: 521-208HN SKU: ACPI15914237 TAPA: D8-1

$16.18 - $16.18
$16.18
$16.18 - $16.18
$16.18
$2.36 - $2.36
$2.36
$2.36 - $2.36
$2.36

STZ Black Malleable Iron Reducing Coupling 1"x1/2"

STZ Black Malleable Iron Reducing Coupling 1"x1/2" Model: 501462 LID

$2.36 - $2.36
$2.36
$2.36 - $2.36
$2.36
$8.57 - $8.57
$8.57
$8.57 - $8.57
$8.57

Acoplamiento reductor de hierro negro Southland - 1-1/4" x 3/4"

Acoplamiento reductor de hierro negro Southland - 1-1/4" x 3/4" Modelo: 521-364HN SKU: ACPI15913635 TAPA: D9-1

$8.57 - $8.57
$8.57
$8.57 - $8.57
$8.57
$8.77 - $8.77
$8.77
$8.77 - $8.77
$8.77

Acoplamiento reductor de hierro negro Southland - 1-1/4" x 1"

Acoplamiento reductor de hierro negro Southland - 1-1/4" x 1" Modelo: 521-365HN SKU: ACPI15913643 TAPA: D9-1

$8.77 - $8.77
$8.77
$8.77 - $8.77
$8.77
$2.94 - $2.94
$2.94
$2.94 - $2.94
$2.94

STZ 1" x 3/4 Black malleable iron reducer coupling

STZ 1" x 3/4 Black malleable iron reducer coupling Model: 501473

$2.94 - $2.94
$2.94
$2.94 - $2.94
$2.94
$12.79 - $12.79
$12.79
$12.79 - $12.79
$12.79

Acoplamiento reductor de hierro negro Southland - 1-1/2" x 1/2"

Acoplamiento reductor de hierro negro Southland - 1-1/2" x 1/2" Modelo: 521-373HC SKU: ACPI15913270 TAPA: D8-2

$12.79 - $12.79
$12.79
$12.79 - $12.79
$12.79
$13.69 - $13.69
$13.69
$13.69 - $13.69
$13.69

STZ Black Malleable Iron Reducing Coupling- 1-1/2 x 1

STZ Industries Black Malleable Iron Reducing Coupling- 1-1/2 x 1 Model: 501463 LID:

$13.69 - $13.69
$13.69
$13.69 - $13.69
$13.69
$18.79 - $18.79
$18.79
$18.79 - $18.79
$18.79

Acoplamiento reductor Southland Black Iron FIP x FIP - 2" x 3/4"

Acoplamiento reductor Southland Black Iron FIP x FIP - 2" x 3/4" Modelo: 521-384 SKU: ACPI15913288 TAPA: D8-1

$18.79 - $18.79
$18.79
$18.79 - $18.79
$18.79
$10.96 - $10.96
$10.96
$10.96 - $10.96
$10.96

Acoplamiento reductor negro Southland Mueller - 1-1/4" x 1/2"

Acoplamiento reductor negro Southland Mueller - 1-1/4" x 1/2" Modelo: 521-363HC SKU: ACPI15913254 TAPA: D9-1

$10.96 - $10.96
$10.96
$10.96 - $10.96
$10.96
$18.75 - $18.75
$18.75
$18.75 - $18.75
$18.75

Acoplamiento reductor de hierro negro Southland - 2" x 1-1/4"

Acoplamiento reductor de hierro negro Southland - 2" x 1-1/4" Modelo: 521-386HN SKU: ACPI15913676 TAPA: D8-1

$18.75 - $18.75
$18.75
$18.75 - $18.75
$18.75
$10.54 - $10.54
$10.54
$10.54 - $10.54
$10.54

Hierro de acoplamiento reductor negro Southland - 2" x 1-1/2"

Hierro de acoplamiento reductor negro Southland - 2" x 1-1/2" Modelo: 521-387HC SKU: ACPI15913684 TAPA: D8-1

$10.54 - $10.54
$10.54
$10.54 - $10.54
$10.54
$4.16 - $4.16
$4.16
$4.16 - $4.16
$4.16

Acoplamiento reductor de hierro negro Southland - 1/2" x 3/8"

Acoplamiento reductor de hierro negro Southland - 1/2" x 3/8" Modelo: 521-332HN SKU: ACPI15913742 TAPA: D9-4

$4.16 - $4.16
$4.16
$4.16 - $4.16
$4.16
$3.27 - $3.27
$3.27
$3.27 - $3.27
$3.27

Acoplamiento reductor de hierro negro Ward - 1-1/2" x 1"

Acoplamiento reductor de hierro negro maleable Ward - 1-1/2" x 1" Modelo: 1DX1.B300C\1DXD.BMC SKU: ACPI46735660 TAPA: D9-1

$3.27 - $3.27
$3.27
$3.27 - $3.27
$3.27
$12.89 - $12.89
$12.89
$12.89 - $12.89
$12.89

Acoplamiento reductor de hierro negro Southland - 1-1/2" x 1/2"

Acoplamiento reductor de hierro negro Southland - 1-1/2" x 1/2" Modelo: 521-373HC SKU: ACPI15913270 TAPA: D8-2

$12.89 - $12.89
$12.89
$12.89 - $12.89
$12.89
$11.19 - $11.19
$11.19
$11.19 - $11.19
$11.19

Reducción de acoplamiento de hierro negro Southland - 1-1/2" x 1-1/4"

Reducción de acoplamiento de hierro negro Southland - 1-1/2" x 1-1/4" Modelo: 521-376HN SKU: ACPI15913668 TAPA: D8-2

$11.19 - $11.19
$11.19
$11.19 - $11.19
$11.19

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