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Malleable Iron

  • Malleable Iron Caps conform to ASTM A197/ASME B16.3.
  • Available in both black and galvanized finishes.
  • Stocked in sizes from 1/8" to 6".
  • All Malleable Iron Caps have female NPT threads.
Five types of Galvanized Malleable Iron Caps ranging in size and black and galvanized finishes Sizes are Nominal Pipe Size (NPS) - size chartTemperature/Pressure cross reference for Malleable Iron Caps
Malleable Iron Caps
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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.

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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.
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Black - standard pipe finish. Galvanized - zinc plated for corrosion resistance.
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Domestic - Made in the USA. Import - Made elsewhere.
Enlarge BMI.125 STD CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI.125 STD CAP
  • SKU: 105943
  • Weight: .03
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.125

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $3.11
10 - 49 = $2.35
50 - 99 = $2.14
100 + = $1.71
Quantity:
–
+
We show 100 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI.250 STD CAP
  • SKU: 101107
  • Weight: .06
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.25

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $3.22
10 - 49 = $2.45
50 - 99 = $2.23
100 + = $1.78
Quantity:
–
+
We show 170 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI.375 STD CAP
  • SKU: 101520
  • Weight: .09
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.375

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $3.40
10 - 49 = $2.61
50 - 99 = $2.38
100 + = $1.90
Quantity:
–
+
We show 228 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI.750 STD CAP
  • SKU: 101723
  • Weight: .22
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.75

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $3.22
10 - 49 = $2.45
50 - 99 = $2.23
100 + = $1.78
Quantity:
–
+
We show 4283 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI1.00 STD CAP
  • SKU: 101798
  • Weight: .38
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.00

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $4.67
10 - 24 = $3.76
25 - 49 = $3.42
50 + = $2.73
Quantity:
–
+
We show 423 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI1.25 STD CAP
  • SKU: 101109
  • Weight: .58
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.25

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 = $3.40
10 - 24 = $2.61
25 - 49 = $2.38
50 + = $1.90
Quantity:
–
+
We show 267 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI1.50 STD CAP
  • SKU: 101058
  • Weight: .73
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.50

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 = $7.20
10 - 24 = $5.59
25 - 49 = $5.18
50 + = $4.06
Quantity:
–
+
We show 623 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI2.00 STD CAP
  • SKU: 101743
  • Weight: 1.20
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 2.00

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $8.57
10 - 24 = $6.83
25 - 49 = $6.33
50 + = $4.97
Quantity:
–
+
We show 193 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI2.50 STD CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI2.50 STD CAP
  • SKU: 105614
  • Weight: 1.75
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 2.50

Description:
IMPORT BLACK MALLEABLE IRON

FOR 2-1/2" PIPE(2.875 OD) FEMALE THREAD,ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $20.93
10 - 24 = $17.97
25 - 49 = $16.34
50 + = $13.07
Quantity:
–
+
We show 40 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI3.00 STD CAP
  • SKU: 103709
  • Weight: 2.28
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 3.00

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $19.78
10 - 24 = $16.03
25 - 49 = $14.20
50 + = $12.82
Quantity:
–
+
We show 228 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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI4.00 STD CAP
  • SKU: 102241
  • Weight: 3.12
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 4.00

Description:
IMPORT BLACK MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $32.94
10 - 24 = $25.99
25 - 49 = $23.02
50 + = $20.79
Quantity:
–
+
We show 104 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 BMI5.00 STD CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI5.00 STD CAP
  • SKU: 103191
  • Weight: 7.00
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 5.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 5" PIPE(5.563 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 4 = $96.35
5 - 9 = $81.47
10 - 24 = $76.54
25 + = $69.13
Quantity:
–
+
We show 15 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge BMI6.00 STD CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: BMI6.00 STD CAP
  • SKU: 105376
  • Weight: 8.85
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 6.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 6" PIPE(6.625 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 4 = $135.91
5 - 9 = $107.48
10 - 24 = $95.20
25 + = $89.06
Quantity:
–
+
We show 33 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

Enlarge GMI.125 STD CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI.125 STD CAP
  • SKU: 102165
  • Weight: .04
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.125

Description:
IMPORT GALV MALLEABLE IRON

FOR 1/8" PIPE(.405 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $3.69
10 - 49 = $2.87
50 - 99 = $2.61
100 + = $2.09
Quantity:
–
+
We show 154 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI.250 STD CAP
  • SKU: 100899
  • Weight: .25
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.25

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $4.12
10 - 49 = $3.27
50 - 99 = $3.03
100 + = $2.38
Quantity:
–
+
We show 100 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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI.375 STD CAP
  • SKU: 101450
  • Weight: .10
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.375

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $4.01
10 - 49 = $3.17
50 - 99 = $2.88
100 + = $2.30
Quantity:
–
+
We show 102 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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI.500 STD CAP
  • SKU: 107780
  • Weight: .12
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.50

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $3.04
10 - 49 = $2.29
50 - 99 = $2.12
100 + = $1.66
Quantity:
–
+
We show 118 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI.750 STD CAP
  • SKU: 107888
  • Weight: .20
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.75

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $4.16
10 - 49 = $3.30
50 - 99 = $3.06
100 + = $2.40
Quantity:
–
+
We show 173 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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI1.25 STD CAP
  • SKU: 107965
  • Weight: .58
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 1.25

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $6.80
10 - 49 = $5.23
50 - 99 = $4.85
100 + = $3.80
Quantity:
–
+
We show 185 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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI2.00 STD CAP
  • SKU: 105586
  • Weight: .87
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 2.00

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $12.05
10 - 24 = $9.96
25 - 49 = $9.24
50 + = $7.25
Quantity:
–
+
We show 153 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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI2.50 STD CAP
  • SKU: 109838
  • Weight: 1.80
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 2.50

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 = $32.25
10 - 24 = $26.82
25 - 49 = $24.38
50 + = $19.51
Quantity:
–
+
We show 26 in stock
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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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI3.00 STD CAP
  • SKU: 104863
  • Weight: 2.75
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 3.00

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $25.18
10 - 24 = $20.64
25 - 49 = $19.46
50 + = $18.29
Quantity:
–
+
We show 111 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 CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI4.00 STD CAP
  • SKU: 107579
  • Weight: 4.61
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 4.00

Description:
IMPORT GALV MALLEABLE IRON

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

Price by Quantity:
1 - 9 = $58.58
10 - 24 = $45.74
25 - 30 = $43.12
31 + = $40.51
Quantity:
–
+
We show 110 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 GMI6.00 STD CAP photo Enlarge
Caps » Malleable Iron
  • Product Name: GMI6.00 STD CAP
  • SKU: 106522
  • Weight: 9.98
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 6.00

Description:
IMPORT GALV MALLEABLE IRON

FOR 6 PIPE(6.625 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 4 = $198.13
5 - 9 = $160.60
10 - 24 = $151.43
25 + = $142.25
Quantity:
–
+
We show 15 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.