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| Quantity: | |
|---|---|
BL Flange
SDFL
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Flange Ring Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | G | |||
| 15 | 1/2 | 95.2 | 66.5 | 15.7 | 4 | 14.2 | 35.1 | 6.4 |
| 20 | 3/4 | 117.3 | 82.6 | 19.1 | 4 | 15.7 | 42.9 | 6.4 |
| 25 | 1 | 123.9 | 88.9 | 19.1 | 4 | 17.5 | 50.8 | 6.4 |
| 32 | 1-1/4 | 133.3 | 98.6 | 19.1 | 4 | 20.6 | 63.5 | 6.4 |
| 40 | 1-1/2 | 155.4 | 114.3 | 22.4 | 4 | 22.3 | 73.15 | 6.4 |
| 50 | 2 | 165.1 | 127 | 19.1 | 8 | 25.4 | 91.9 | 6.4 |
| 65 | 2-1/2 | 190.5 | 149.4 | 22.4 | 8 | 28.4 | 104.6 | 6.4 |
| 80 | 3 | 209.5 | 168.1 | 22.4 | 8 | 31.7 | 127 | 6.4 |
| 90 | 3-1/2 | 228.6 | 184.2 | 25.4 | 8 | 35 | 139.7 | 6.4 |
| 100 | 4 | 273.1 | 215.9 | 25.4 | 8 | 38.1 | 157.2 | 6.4 |
| 125 | 5 | 330.2 | 266.7 | 28.4 | 8 | 44.5 | 185.7 | 6.4 |
| 150 | 6 | 355.6 | 292.1 | 28.4 | 12 | 47.8 | 215.9 | 6.4 |
| 200 | 8 | 419.1 | 349.3 | 31.8 | 12 | 55.6 | 269.7 | 6.4 |
| 250 | 10 | 508 | 431.8 | 35.1 | 16 | 63.5 | 323.9 | 6.4 |
| 300 | 12 | 558.8 | 489 | 35.1 | 20 | 66.55 | 381 | 6.4 |
| 350 | 14 | 603.3 | 527.1 | 38.1 | 20 | 69.85 | 412.8 | 6.4 |
| 400 | 16 | 685.8 | 603.3 | 41.1 | 20 | 76.2 | 469.9 | 6.4 |
| 450 | 18 | 743 | 654.1 | 44.5 | 20 | 82.6 | 533.4 | 6.4 |
| 500 | 20 | 812.8 | 723.9 | 44.5 | 24 | 88.9 | 584.2 | 6.4 |
| 600 | 24 | 939.8 | 838.2 | 50.8 | 24 | 101.6 | 692.2 | 6.4 |
High pressure medium sealing: Used for high-pressure pipelines (such as wellhead pipelines and compressor outlets) in industries such as petroleum, natural gas, and chemical, it needs to withstand a pressure of ≥ 600 LB (about 10 MPa).
Key equipment isolation: Install blind flanges at the inlet and outlet of high-pressure reactors, heat exchangers, or pumps to ensure complete isolation of the medium during maintenance.
Design Features of ANSI 600 LB BL Flanges
Common materials: ASTM A105 (carbon steel), A182 F304/F316 (stainless steel), A350 LF2 (low-temperature carbon steel).
High temperature condition: Choose A182 F11/F22 (chromium molybdenum steel).
Structural strength:
The thickness is significantly increased compared to the low-pressure blind plate, and the pressure bearing capacity needs to be verified through ANSYS stress analysis.
Sealing form:
RF or RTJ, the latter being more suitable for high-pressure gases.
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Flange Ring Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | G | |||
| 15 | 1/2 | 95.2 | 66.5 | 15.7 | 4 | 14.2 | 35.1 | 6.4 |
| 20 | 3/4 | 117.3 | 82.6 | 19.1 | 4 | 15.7 | 42.9 | 6.4 |
| 25 | 1 | 123.9 | 88.9 | 19.1 | 4 | 17.5 | 50.8 | 6.4 |
| 32 | 1-1/4 | 133.3 | 98.6 | 19.1 | 4 | 20.6 | 63.5 | 6.4 |
| 40 | 1-1/2 | 155.4 | 114.3 | 22.4 | 4 | 22.3 | 73.15 | 6.4 |
| 50 | 2 | 165.1 | 127 | 19.1 | 8 | 25.4 | 91.9 | 6.4 |
| 65 | 2-1/2 | 190.5 | 149.4 | 22.4 | 8 | 28.4 | 104.6 | 6.4 |
| 80 | 3 | 209.5 | 168.1 | 22.4 | 8 | 31.7 | 127 | 6.4 |
| 90 | 3-1/2 | 228.6 | 184.2 | 25.4 | 8 | 35 | 139.7 | 6.4 |
| 100 | 4 | 273.1 | 215.9 | 25.4 | 8 | 38.1 | 157.2 | 6.4 |
| 125 | 5 | 330.2 | 266.7 | 28.4 | 8 | 44.5 | 185.7 | 6.4 |
| 150 | 6 | 355.6 | 292.1 | 28.4 | 12 | 47.8 | 215.9 | 6.4 |
| 200 | 8 | 419.1 | 349.3 | 31.8 | 12 | 55.6 | 269.7 | 6.4 |
| 250 | 10 | 508 | 431.8 | 35.1 | 16 | 63.5 | 323.9 | 6.4 |
| 300 | 12 | 558.8 | 489 | 35.1 | 20 | 66.55 | 381 | 6.4 |
| 350 | 14 | 603.3 | 527.1 | 38.1 | 20 | 69.85 | 412.8 | 6.4 |
| 400 | 16 | 685.8 | 603.3 | 41.1 | 20 | 76.2 | 469.9 | 6.4 |
| 450 | 18 | 743 | 654.1 | 44.5 | 20 | 82.6 | 533.4 | 6.4 |
| 500 | 20 | 812.8 | 723.9 | 44.5 | 24 | 88.9 | 584.2 | 6.4 |
| 600 | 24 | 939.8 | 838.2 | 50.8 | 24 | 101.6 | 692.2 | 6.4 |
High pressure medium sealing: Used for high-pressure pipelines (such as wellhead pipelines and compressor outlets) in industries such as petroleum, natural gas, and chemical, it needs to withstand a pressure of ≥ 600 LB (about 10 MPa).
Key equipment isolation: Install blind flanges at the inlet and outlet of high-pressure reactors, heat exchangers, or pumps to ensure complete isolation of the medium during maintenance.
Design Features of ANSI 600 LB BL Flanges
Common materials: ASTM A105 (carbon steel), A182 F304/F316 (stainless steel), A350 LF2 (low-temperature carbon steel).
High temperature condition: Choose A182 F11/F22 (chromium molybdenum steel).
Structural strength:
The thickness is significantly increased compared to the low-pressure blind plate, and the pressure bearing capacity needs to be verified through ANSYS stress analysis.
Sealing form:
RF or RTJ, the latter being more suitable for high-pressure gases.
