Scam Alert – an outsider is using a variant of our domain to send emails – steelsupply"L"nc.com. Please beware of any emails from this domain, it is not us.
Trustpilot

Malleable Iron

  • Malleable Iron Couplings are available in both black and galvanized finishes.
  • All are Full Couplings.
  • Malleable Iron Couplings are stocked in sizes from 1/8" to 4".
Five different sizes of Malleable Iron CouplingsTemperature/Pressure cross reference for Malleable Iron CouplingsSizes are Nominal Pipe Size (NPS) - size chart
Malleable Iron Couplings
Help

To start, select size. Follow the green box to refine selections as desired. Click “Lookup Product” any time after selecting size to display products matching criteria entered so far. Fields autofill when only one choice. Or use search box above.

i
Class for pipe fittings is a standard defined by the ASME/ASTM. Though stated with a # sign, such as 150# or 3000#, it is not a direct pressure rating.  The pressure rating is dependent on material and temperature and is found by consulting an appropriate reference guide.
i
Black - standard pipe finish. Galvanized - zinc plated for corrosion resistance.
i
Domestic = Made in the USA Import = Made anywhere else
i
Full couplings are intended to join two pieces of pipe together. Half couplings are used to make a branch connection instead of using a sockolet or thredolet.
Enlarge BMI.125 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI.125 STD COUPLING
  • SKU: 104145
  • Weight: .06
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.125
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1/8" PIPE(.405 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $4.18
10 - 49 = $3.27
50 - 99 = $2.97
100 + = $2.38
Quantity:
–
+
We show 107 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI.250 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI.250 STD COUPLING
  • SKU: 104287
  • Weight: .06
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.25
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1/4" PIPE(.540 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $4.05
10 - 49 = $3.15
50 - 99 = $2.86
100 + = $2.29
Quantity:
–
+
We show 199 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI.375 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI.375 STD COUPLING
  • SKU: 103685
  • Weight: .13
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.375
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 3/8" PIPE(.675 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $3.85
10 - 49 = $2.97
50 - 99 = $2.70
100 + = $2.16
Quantity:
–
+
We show 208 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI.500 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI.500 STD COUPLING
  • SKU: 103051
  • Weight: .20
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.50
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1/2" PIPE(.840 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $3.01
10 - 49 = $2.23
50 - 99 = $2.03
100 + = $1.62
Quantity:
–
+
We show 244 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI.750 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI.750 STD COUPLING
  • SKU: 103052
  • Weight: .29
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.75
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 3/4" PIPE(1.05 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $3.65
10 - 49 = $2.79
50 - 99 = $2.54
100 + = $2.03
Quantity:
–
+
We show 366 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI1.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI1.00 STD COUPLING
  • SKU: 104242
  • Weight: .48
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.00
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1" PIPE(1.315 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $5.25
10 - 24 = $4.22
25 - 49 = $3.83
50 + = $3.07
Quantity:
–
+
We show 380 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI1.25 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI1.25 STD COUPLING
  • SKU: 107845
  • Weight: .74
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.25
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1-1/4" PIPE(1.66 OD) FEMALE THREADS,ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $6.89
10 - 24 = $5.23
25 - 49 = $4.75
50 + = $3.80
Quantity:
–
+
We show 117 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI1.50 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI1.50 STD COUPLING
  • SKU: 100878
  • Weight: 1.00
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.50
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1-1/2" PIPE(1.90 OD) FEMALE THREADS,ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $9.00
10 - 24 = $7.10
25 - 49 = $6.58
50 + = $5.16
Quantity:
–
+
We show 117 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI2.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI2.00 STD COUPLING
  • SKU: 104141
  • Weight: 1.45
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 2.00
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 2" PIPE(2.375 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $12.08
10 - 24 = $9.83
25 - 49 = $9.12
50 + = $7.15
Quantity:
–
+
We show 132 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI3.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI3.00 STD COUPLING
  • SKU: 113601
  • Weight: 3.30
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 3.00
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 3" PIPE(3.50 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $28.88
10 - 24 = $21.98
25 - 49 = $19.47
50 + = $17.58
Quantity:
–
+
We show 46 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI4.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: BMI4.00 STD COUPLING
  • SKU: 107769
  • Weight: 5.65
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 4.00
  • Type: full

Description:
IMPORT BLACK MALLEABLE IRON

FOR 4" PIPE(4.50 OD) FEMALES THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 4 = $60.14
5 - 24 = $45.95
25 - 49 = $40.69
50 + = $36.76
Quantity:
–
+
We show 34 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI.250 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI.250 STD COUPLING
  • SKU: 104139
  • Weight: .09
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.25
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 1/4" PIPE(.540 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $2.63
10 - 49 = $1.95
50 - 99 = $1.81
100 + = $1.42
Quantity:
–
+
We show 605 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI.375 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI.375 STD COUPLING
  • SKU: 107763
  • Weight: .13
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.375
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 3/8" PIPE(.675 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $4.69
10 - 49 = $3.71
50 - 99 = $3.38
100 + = $2.70
Quantity:
–
+
We show 32 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI.500 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI.500 STD COUPLING
  • SKU: 109275
  • Weight: .20
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.50
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 1/2" PIPE(.840 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $4.02
10 - 49 = $3.12
50 - 99 = $2.89
100 + = $2.27
Quantity:
–
+
We show 811 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI.750 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI.750 STD COUPLING
  • SKU: 106814
  • Weight: .31
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.75
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 3/4" PIPE(1.05 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $4.32
10 - 49 = $3.39
50 - 49 = $3.14
50 + = $2.46
Quantity:
–
+
We show 356 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI1.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI1.00 STD COUPLING
  • SKU: 105282
  • Weight: .46
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 1.00
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 1" PIPE(1.315 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $7.19
10 - 24 = $5.49
25 - 49 = $5.09
50 + = $4.00
Quantity:
–
+
We show 254 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI1.25 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI1.25 STD COUPLING
  • SKU: 101139
  • Weight: .89
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 1.25
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 1-1/4" PIPE(1.66 OD) FEMALE THREADS, ASTM A153/ASME B16.

Price by Quantity:
1 - 9 = $9.37
10 - 24 = $7.43
25 - 49 = $6.89
50 + = $5.40
Quantity:
–
+
We show 69 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI1.50 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI1.50 STD COUPLING
  • SKU: 107540
  • Weight: 1.00
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 1.50
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 1-1/2" PIPE(1.90 OD) FEMALE THREADS,ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $11.04
10 - 24 = $8.91
25 - 49 = $8.26
50 + = $6.48
Quantity:
–
+
We show 40 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI2.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI2.00 STD COUPLING
  • SKU: 103849
  • Weight: 1.45
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 2.00
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 2" PIPE(2.375 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $15.90
10 - 24 = $13.22
25 - 49 = $12.26
50 + = $9.61
Quantity:
–
+
We show 71 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI2.50 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI2.50 STD COUPLING
  • SKU: 107582
  • Weight: 2.45
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 2.50
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 2-1/2 PIPE(2.875 OD) FEMALE THREADS,ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $44.35
10 - 24 = $37.13
25 - 49 = $33.75
50 + = $27.00
Quantity:
–
+
We show 17 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI3.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI3.00 STD COUPLING
  • SKU: 112407
  • Weight: 3.30
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 3.00
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 3" PIPE(3.50 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $46.92
10 - 24 = $37.80
25 - 49 = $33.08
50 + = $29.30
Quantity:
–
+
We show 30 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI4.00 STD COUPLING photo Enlarge
Couplings » Malleable Iron
  • Product Name: GMI4.00 STD COUPLING
  • SKU: 107583
  • Weight: 5.73
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 4.00
  • Type: full

Description:
IMPORT GALV MALLEABLE IRON

FOR 4 PIPE(4.50 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $84.38
10 - 24 = $66.15
25 - 49 = $62.37
50 + = $58.59
Quantity:
–
+
We show 35 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.