AMCO METALS
Blind Flange

Blind Flange

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Blind Flange

  • Blind flanges are used to blank off pipelines, valves and pumps.
  • They can also be used as an inspection cover.
  • It is sometimes referred to as a blanking flange.
  • Used to terminate a piping line.
  • Description of Blind flange
  • Type: Blind Flange
  • Material: Carbon steel: A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22.8, Stainless Steel: F304 F304L F316 F316L 316Ti, Copper etc.
  • Standard: ANSI,JIS,DIN,BS4504,SABS1123,EN1092-1, UNI,AS2129,GOST-12820
  • Size: 1/2-78 inch (DN15-DN2000)
  • Pressure: ANSI class 150,300,600,1500,2500, DIN PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160
  • Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.
  • E-catalogue: Available , please visit catalogue of flange
  • Usage: Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.

    Pipe Normal Diam.

    O.D. Flange

    Thk. Of Flange Min

    Diameter of Raised Face

    Diam. 
    of Bolt 
    Circle

    Diam. 
    of Bolt 
    Holes

    Number 
    of Bolts

    Diam. of 
    Bolts 
    (inch)

    inch

    dn

    O

    C

    G

    BC

    BH

    BN

    BD

    1/2"

    15

    89.00

    11.20

    35.10

    60.50

    15.80

    4

    1/2"

    3/4"

    20

    98.50

    12.70

    42.90

    69.90

    15.80

    4

    1/2"

    1"

    25

    108.00

    14.20

    50.80

    79.30

    15.80

    4

    1/2"

    1-1/4"

    32

    117.50

    15.70

    63.50

    88.90

    15.80

    4

    1/2"

    1-1/2"

    40

    127.00

    17.50

    73.20

    98.60

    15.80

    4

    1/2"

    2"

    50

    152.50

    19.10

    91.90

    120.70

    19.10

    4

    5/8"

    2-1/2"

    65

    178.00

    22.40

    104.60

    139.70

    19.10

    4

    5/8"

    3"

    80

    190.50

    23.90

    127.00

    152.40

    19.10

    4

    5/8"

    3-1/2"

    90

    216.00

    23.90

    139.70

    177.80

    19.10

    8

    5/8"

    4"

    100

    228.50

    23.90

    157.20

    190.50

    19.10

    8

    5/8"

    5"

    125

    254.00

    23.90

    185.70

    215.90

    22.40

    8

    3/4"

    6"

    150

    279.50

    25.40

    215.90

    241.30

    22.40

    8

    3/4"

    8"

    200

    343.00

    28.40

    269.70

    298.50

    22.40

    8

    3/4"

    10"

    250

    406.50

    30.20

    323.90

    362.00

    25.40

    12

    7/8"

    12"

    300

    482.50

    31.80

    381.00

    431.80

    25.40

    12

    7/8"

    14"

    350

    533.50

    35.10

    412.80

    476.30

    28.50

    12

    1"

    16"

    400

    597.00

    36.60

    469.90

    539.80

    28.50

    16

    1"

    18"

    450

    635.00

    39.60

    533.40

    577.90

    31.80

    16

    1 1/8"

    20"

    500

    698.50

    42.90

    584.20

    635.00

    31.80

    20

    1 1/8"

    24"

    600

    813.00

    47.80

    692.20

    749.30

    35.10

    20

    1 1/4"