 |
| 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 Diameter | |
| 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 |
Dimension inspection: Full - size verification (focus on checking that the surface roughness of the sealing surface Ra ≤ 3.2μm)
Material verification: Spectral analysis (PMI) or material certificate (MTC)
Non - destructive testing: Magnetic particle testing (MT, carbon steel flanges) / Penetrant testing (PT, stainless - steel flanges)
Hydrostatic test: Test pressure = 1.5 times the design pressure
1.Reinforced SO Flange
Feature: Add a back reinforcement ring
Performance improvement:
The bending resistance is increased by 40%
It can be applied to Class 1500 working conditions
2.Lined SO Flange
Structure: Lined with PTFE/rubber anti-corrosion layer
Application: Strongly corrosive media (such as 98% sulfuric acid)
| 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 Diameter | |
| 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 |
Dimension inspection: Full - size verification (focus on checking that the surface roughness of the sealing surface Ra ≤ 3.2μm)
Material verification: Spectral analysis (PMI) or material certificate (MTC)
Non - destructive testing: Magnetic particle testing (MT, carbon steel flanges) / Penetrant testing (PT, stainless - steel flanges)
Hydrostatic test: Test pressure = 1.5 times the design pressure
1.Reinforced SO Flange
Feature: Add a back reinforcement ring
Performance improvement:
The bending resistance is increased by 40%
It can be applied to Class 1500 working conditions
2.Lined SO Flange
Structure: Lined with PTFE/rubber anti-corrosion layer
Application: Strongly corrosive media (such as 98% sulfuric acid)
