 |
| 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 | |
| ND | NPS | A | J | I | G | |||
| 15 | 1/2 | 120.6 | 82.6 | 22.3 | 4 | 22.3 | 35.1 | 6.4 |
| 20 | 3/4 | 130 | 88.9 | 22.3 | 4 | 25.4 | 42.9 | 6.4 |
| 25 | 1 | 149.3 | 101.6 | 25.4 | 4 | 28.4 | 50.8 | 6.4 |
| 32 | 1-1/4 | 158.7 | 111.3 | 25.4 | 4 | 28.4 | 63.5 | 6.4 |
| 40 | 1-1/2 | 177.8 | 124 | 28.4 | 4 | 31.7 | 73.15 | 6.4 |
| 50 | 2 | 215.9 | 165.1 | 25.4 | 8 | 38.1 | 91.9 | 6.4 |
| 65 | 2-1/2 | 244.3 | 190.5 | 28.4 | 8 | 41.1 | 104.6 | 6.4 |
| 80 | 3 | 241.3 | 190.5 | 25.4 | 8 | 38.1 | 127 | 6.4 |
| 100 | 4 | 292.1 | 234.9 | 31.7 | 8 | 44.5 | 157.2 | 6.4 |
| 125 | 5 | 349.2 | 279.4 | 35.0 | 8 | 50.8 | 185.7 | 6.4 |
| 150 | 6 | 381 | 317 | 31.7 | 12 | 55.6 | 215.9 | 6.4 |
| 200 | 8 | 469.9 | 393.7 | 38.1 | 12 | 63.5 | 269.7 | 6.4 |
| 250 | 10 | 546.1 | 469.9 | 38.1 | 16 | 69.85 | 323.9 | 6.4 |
| 300 | 12 | 609.6 | 533.4 | 38.1 | 20 | 79.25 | 381 | 6.4 |
| 350 | 14 | 641.3 | 558.8 | 41.1 | 20 | 85.8 | 412.8 | 6.4 |
| 400 | 16 | 704.8 | 615.9 | 44.4 | 20 | 88.9 | 469.9 | 6.4 |
| 450 | 18 | 787.4 | 685.8 | 50.8 | 20 | 101.6 | 533.4 | 6.4 |
| 500 | 20 | 857.2 | 749.3 | 53.8 | 20 | 107.9 | 584.2 | 6.4 |
| 600 | 24 | 1041.4 | 901.7 | 66.6 | 20 | 139.7 | 692.2 | 6.4 |
Application industry scenarios
Petrochemical system
Sealing of high-pressure pipelines:
Maintenance isolation (replacing valves to achieve absolute sealing)
Temporary head for system pressure testing
Reactor/Tower Interface:
Reserved port blind sealing (thickness must be ≥ 1.5 times that of the connected pipeline)
Power energy system
Key parts of the boiler:
Blind plate for steam drum manhole (F91 material, requiring heat treatment)
Sealing of the end of the main steam pipeline
Nuclear power system:
Passive safety system test head
Advantageous technology implementation
Absolute sealed integral forging without welds
Strong pressure bearing capacity and thickened design (thickness formula: t=√ (3PD/16S))
Quick opening and closing matching hydraulic locking device
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Flange Ring Height | Sealing Face Diameter | Sealing Face Height | |
| ND | NPS | A | J | I | G | |||
| 15 | 1/2 | 120.6 | 82.6 | 22.3 | 4 | 22.3 | 35.1 | 6.4 |
| 20 | 3/4 | 130 | 88.9 | 22.3 | 4 | 25.4 | 42.9 | 6.4 |
| 25 | 1 | 149.3 | 101.6 | 25.4 | 4 | 28.4 | 50.8 | 6.4 |
| 32 | 1-1/4 | 158.7 | 111.3 | 25.4 | 4 | 28.4 | 63.5 | 6.4 |
| 40 | 1-1/2 | 177.8 | 124 | 28.4 | 4 | 31.7 | 73.15 | 6.4 |
| 50 | 2 | 215.9 | 165.1 | 25.4 | 8 | 38.1 | 91.9 | 6.4 |
| 65 | 2-1/2 | 244.3 | 190.5 | 28.4 | 8 | 41.1 | 104.6 | 6.4 |
| 80 | 3 | 241.3 | 190.5 | 25.4 | 8 | 38.1 | 127 | 6.4 |
| 100 | 4 | 292.1 | 234.9 | 31.7 | 8 | 44.5 | 157.2 | 6.4 |
| 125 | 5 | 349.2 | 279.4 | 35.0 | 8 | 50.8 | 185.7 | 6.4 |
| 150 | 6 | 381 | 317 | 31.7 | 12 | 55.6 | 215.9 | 6.4 |
| 200 | 8 | 469.9 | 393.7 | 38.1 | 12 | 63.5 | 269.7 | 6.4 |
| 250 | 10 | 546.1 | 469.9 | 38.1 | 16 | 69.85 | 323.9 | 6.4 |
| 300 | 12 | 609.6 | 533.4 | 38.1 | 20 | 79.25 | 381 | 6.4 |
| 350 | 14 | 641.3 | 558.8 | 41.1 | 20 | 85.8 | 412.8 | 6.4 |
| 400 | 16 | 704.8 | 615.9 | 44.4 | 20 | 88.9 | 469.9 | 6.4 |
| 450 | 18 | 787.4 | 685.8 | 50.8 | 20 | 101.6 | 533.4 | 6.4 |
| 500 | 20 | 857.2 | 749.3 | 53.8 | 20 | 107.9 | 584.2 | 6.4 |
| 600 | 24 | 1041.4 | 901.7 | 66.6 | 20 | 139.7 | 692.2 | 6.4 |
Application industry scenarios
Petrochemical system
Sealing of high-pressure pipelines:
Maintenance isolation (replacing valves to achieve absolute sealing)
Temporary head for system pressure testing
Reactor/Tower Interface:
Reserved port blind sealing (thickness must be ≥ 1.5 times that of the connected pipeline)
Power energy system
Key parts of the boiler:
Blind plate for steam drum manhole (F91 material, requiring heat treatment)
Sealing of the end of the main steam pipeline
Nuclear power system:
Passive safety system test head
Advantageous technology implementation
Absolute sealed integral forging without welds
Strong pressure bearing capacity and thickened design (thickness formula: t=√ (3PD/16S))
Quick opening and closing matching hydraulic locking device
