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| Quantity: | |
|---|---|
SO Flange
SDFL
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Inner Diameter | Flange Ring Height | Weld Groove Diameter | Flange Overall Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | B | C | F | D | G | ||
| 15 | 1/2 | 120.6 | 82.6 | 22.4 | 4 | 22.4 | 22.4 | 38.1 | 31.7 | 35.1 | 6.4 |
| 20 | 3/4 | 130 | 88.9 | 22.4 | 4 | 27.7 | 25.4 | 44.4 | 35 | 42.9 | 6.4 |
| 25 | 1 | 149.3 | 101.6 | 25.4 | 4 | 34.5 | 28.4 | 52.3 | 41.1 | 50.8 | 6.4 |
| 32 | 1-1/4 | 158.7 | 111.3 | 25.4 | 4 | 43.2 | 28.4 | 63.5 | 41.1 | 63.5 | 6.4 |
| 40 | 1-1/2 | 177.8 | 124 | 28.4 | 4 | 49.5 | 31.7 | 69.85 | 44.5 | 73.15 | 6.4 |
| 50 | 2 | 215.9 | 165.1 | 25.4 | 8 | 62 | 38.1 | 104.6 | 57.15 | 91.9 | 6.4 |
| 65 | 2-1/2 | 244.3 | 190.5 | 28.4 | 8 | 74.7 | 41.1 | 123.9 | 63.5 | 104.6 | 6.4 |
| 80 | 3 | 241.3 | 190.5 | 25.4 | 8 | 90.7 | 38.1 | 127 | 53.8 | 127 | 6.4 |
| 100 | 4 | 292.1 | 234.9 | 31.7 | 8 | 116.1 | 44.4 | 158.7 | 69.85 | 157.2 | 6.4 |
| 125 | 5 | 349.2 | 279.4 | 35 | 8 | 143.8 | 50.8 | 190.5 | 79.25 | 185.7 | 6.4 |
| 150 | 6 | 381 | 317.5 | 31.7 | 12 | 170.7 | 55.6 | 234.9 | 85.8 | 215.9 | 6.4 |
| 200 | 8 | 469.9 | 393.7 | 38.1 | 12 | 221.5 | 63.5 | 298.4 | 101.6 | 269.7 | 6.4 |
| 250 | 10 | 546.1 | 469.9 | 38.1 | 16 | 276.3 | 69.85 | 368.3 | 107.9 | 323.9 | 6.4 |
| 300 | 12 | 609.6 | 533.4 | 38.1 | 20 | 327.1 | 79.25 | 419.1 | 117.3 | 381 | 6.4 |
| 350 | 14 | 641.3 | 558.8 | 41.1 | 20 | 359.1 | 85.8 | 450.8 | 130 | 412.8 | 6.4 |
| 400 | 16 | 704.8 | 615.9 | 44.4 | 20 | 410.5 | 88.9 | 508 | 133.3 | 469.9 | 6.4 |
| 450 | 18 | 787.4 | 685.8 | 50.8 | 20 | 461.8 | 101.6 | 565.1 | 152.4 | 533.4 | 6.4 |
| 500 | 20 | 857.2 | 749.3 | 53.8 | 20 | 513.1 | 107.9 | 622.3 | 158.7 | 584.2 | 6.4 |
| 600 | 24 | 1041 | 901.7 | 66.6 | 20 | 616 | 139.7 | 749.3 | 203.2 | 692.2 | 6.4 |
(1) Oil and gas industry
High pressure wellhead equipment
Used for Christmas Tree or wellhead manifold, connecting high-pressure oil pipes (≥ 15000 psi).
Natural gas compression station
Used for quick installation, disassembly, and maintenance in the inlet and outlet pipelines of compressors.
(2) Chemical and petrochemical industry
High pressure reactor pipeline
Suitable for high-pressure (20-30 MPa) systems such as polymerization reactions and hydrocracking.
Corrosive medium pipeline
If PTFE or Hastelloy lining material is used, it can be used for strong acid (sulfuric acid, hydrochloric acid) or strong alkali (NaOH) transportation systems.
System type, operating condition parameters, SO flange requirements
High pressure natural gas pipeline pressure: 25 MPa, temperature: 50 ° C Material: A105+RTJ seal, bolt: A193 B7M (sulfur resistant).
Ethylene cracking unit pressure: 22 MPa, temperature: 300 ° C Material: A182 F316L, gasket: stainless steel wrapped graphite pad.
Main steam pipe pressure of the power station: 26 MPa, temperature: 600 ° C Material: A182 F91 (9Cr-1Mo-V), requiring post weld heat treatment (PWHT).
LNG low-temperature pipeline pressure: 20 MPa, temperature: -162 ° C Material: A350 LF3, sealing surface RTJ, bolt A320 L7 (low-temperature toughness).
| Nominal Size | Outer Diameter | Central circle diameter | Bolt Hole Diameter | Number of Bolt Holes | Inner Diameter | Flange Ring Height | Weld Groove Diameter | Flange Overall Height | Sealing Face Diameter | Sealing Face Height | |
| DN | NPS | A | J | I | B | C | F | D | G | ||
| 15 | 1/2 | 120.6 | 82.6 | 22.4 | 4 | 22.4 | 22.4 | 38.1 | 31.7 | 35.1 | 6.4 |
| 20 | 3/4 | 130 | 88.9 | 22.4 | 4 | 27.7 | 25.4 | 44.4 | 35 | 42.9 | 6.4 |
| 25 | 1 | 149.3 | 101.6 | 25.4 | 4 | 34.5 | 28.4 | 52.3 | 41.1 | 50.8 | 6.4 |
| 32 | 1-1/4 | 158.7 | 111.3 | 25.4 | 4 | 43.2 | 28.4 | 63.5 | 41.1 | 63.5 | 6.4 |
| 40 | 1-1/2 | 177.8 | 124 | 28.4 | 4 | 49.5 | 31.7 | 69.85 | 44.5 | 73.15 | 6.4 |
| 50 | 2 | 215.9 | 165.1 | 25.4 | 8 | 62 | 38.1 | 104.6 | 57.15 | 91.9 | 6.4 |
| 65 | 2-1/2 | 244.3 | 190.5 | 28.4 | 8 | 74.7 | 41.1 | 123.9 | 63.5 | 104.6 | 6.4 |
| 80 | 3 | 241.3 | 190.5 | 25.4 | 8 | 90.7 | 38.1 | 127 | 53.8 | 127 | 6.4 |
| 100 | 4 | 292.1 | 234.9 | 31.7 | 8 | 116.1 | 44.4 | 158.7 | 69.85 | 157.2 | 6.4 |
| 125 | 5 | 349.2 | 279.4 | 35 | 8 | 143.8 | 50.8 | 190.5 | 79.25 | 185.7 | 6.4 |
| 150 | 6 | 381 | 317.5 | 31.7 | 12 | 170.7 | 55.6 | 234.9 | 85.8 | 215.9 | 6.4 |
| 200 | 8 | 469.9 | 393.7 | 38.1 | 12 | 221.5 | 63.5 | 298.4 | 101.6 | 269.7 | 6.4 |
| 250 | 10 | 546.1 | 469.9 | 38.1 | 16 | 276.3 | 69.85 | 368.3 | 107.9 | 323.9 | 6.4 |
| 300 | 12 | 609.6 | 533.4 | 38.1 | 20 | 327.1 | 79.25 | 419.1 | 117.3 | 381 | 6.4 |
| 350 | 14 | 641.3 | 558.8 | 41.1 | 20 | 359.1 | 85.8 | 450.8 | 130 | 412.8 | 6.4 |
| 400 | 16 | 704.8 | 615.9 | 44.4 | 20 | 410.5 | 88.9 | 508 | 133.3 | 469.9 | 6.4 |
| 450 | 18 | 787.4 | 685.8 | 50.8 | 20 | 461.8 | 101.6 | 565.1 | 152.4 | 533.4 | 6.4 |
| 500 | 20 | 857.2 | 749.3 | 53.8 | 20 | 513.1 | 107.9 | 622.3 | 158.7 | 584.2 | 6.4 |
| 600 | 24 | 1041 | 901.7 | 66.6 | 20 | 616 | 139.7 | 749.3 | 203.2 | 692.2 | 6.4 |
(1) Oil and gas industry
High pressure wellhead equipment
Used for Christmas Tree or wellhead manifold, connecting high-pressure oil pipes (≥ 15000 psi).
Natural gas compression station
Used for quick installation, disassembly, and maintenance in the inlet and outlet pipelines of compressors.
(2) Chemical and petrochemical industry
High pressure reactor pipeline
Suitable for high-pressure (20-30 MPa) systems such as polymerization reactions and hydrocracking.
Corrosive medium pipeline
If PTFE or Hastelloy lining material is used, it can be used for strong acid (sulfuric acid, hydrochloric acid) or strong alkali (NaOH) transportation systems.
System type, operating condition parameters, SO flange requirements
High pressure natural gas pipeline pressure: 25 MPa, temperature: 50 ° C Material: A105+RTJ seal, bolt: A193 B7M (sulfur resistant).
Ethylene cracking unit pressure: 22 MPa, temperature: 300 ° C Material: A182 F316L, gasket: stainless steel wrapped graphite pad.
Main steam pipe pressure of the power station: 26 MPa, temperature: 600 ° C Material: A182 F91 (9Cr-1Mo-V), requiring post weld heat treatment (PWHT).
LNG low-temperature pipeline pressure: 20 MPa, temperature: -162 ° C Material: A350 LF3, sealing surface RTJ, bolt A320 L7 (low-temperature toughness).
