 |
| Quantity: | |
|---|---|
SW Flange
SDFL
| Nominal Size | Outer Diameter | Socket Diameter | Flange Ring Height | Flange Overall Height | Bore Diameter | Socket Depth | Weld Groove Diameter | Sealing Face Diameter | Number of Bolt Holes | Bolt Hole Diameter | Central circle diameter | |
| DN | NPS | A | B | C | D | E | K | F | G | I | J | |
| 15 | 1/2 | 120.6 | 15.7 | 22.3 | 31.7 | 22.4 | 9.6 | 38.1 | 35.1 | 4 | 22.3 | 82.6 |
| 20 | 3/4 | 130 | 20.8 | 25.4 | 35 | 27.7 | 11.1 | 44.4 | 42.9 | 4 | 22.3 | 88.9 |
| 25 | 1 | 149.3 | 26.7 | 28.4 | 41.1 | 34.5 | 12.7 | 52.3 | 50.8 | 4 | 25.4 | 101.6 |
| 32 | 1-1/4 | 158.7 | 35.1 | 28.4 | 41.1 | 43.2 | 14.2 | 63.5 | 63.5 | 4 | 25.4 | 111.3 |
| 40 | 1-1/2 | 177.8 | 40.9 | 31.75 | 44.5 | 49.5 | 15.7 | 69.85 | 73.15 | 4 | 28.4 | 124 |
| 50 | 2 | 215.9 | 52.6 | 38.1 | 57.15 | 62 | 17.5 | 104.6 | 91.9 | 8 | 25.4 | 165.1 |
| 65 | 2-1/2 | 244.3 | 62.7 | 41.1 | 63.5 | 74.7 | 19 | 123.9 | 104.6 | 8 | 28.4 | 190.5 |
1.Petrochemical industry
High - pressure reaction systems: Such as pipelines at the inlet and outlet of hydrogenation reactors and high - pressure separators.
Transport of corrosive media: Stainless steel (such as 316/316L) or alloy materials (such as Inconel) should be selected.
2.Power industry (thermal power/nuclear power)
High - temperature steam pipelines (≤538℃): Such as main steam bypasses and boiler feed water systems.
High - fatigue environments: Pipelines at the inlet and outlet of steam turbines require anti - vibration design.
3.Pharmaceutical and food industries
Transport of high - cleanliness fluids: 316L stainless steel is used, and the inner wall is polished (Ra≤0.8μm).
Parameter Requirements
Standard ANSI/ASME B16.5, B16.11 (Socket welding flange dimension standards)
Pressure rating Class 1500 (≈25MPa at normal temperature, check ASME B16.5 pressure-temperature ratings for high temperature)
Material Carbon steel (A105), Stainless steel (A182 F304/F316), Alloy steel (F11/F22)
Sealing surface RF (Raised face), RTJ (Ring joint face) - RTJ is recommended for high pressure
| Nominal Size | Outer Diameter | Socket Diameter | Flange Ring Height | Flange Overall Height | Bore Diameter | Socket Depth | Weld Groove Diameter | Sealing Face Diameter | Number of Bolt Holes | Bolt Hole Diameter | Central circle diameter | |
| DN | NPS | A | B | C | D | E | K | F | G | I | J | |
| 15 | 1/2 | 120.6 | 15.7 | 22.3 | 31.7 | 22.4 | 9.6 | 38.1 | 35.1 | 4 | 22.3 | 82.6 |
| 20 | 3/4 | 130 | 20.8 | 25.4 | 35 | 27.7 | 11.1 | 44.4 | 42.9 | 4 | 22.3 | 88.9 |
| 25 | 1 | 149.3 | 26.7 | 28.4 | 41.1 | 34.5 | 12.7 | 52.3 | 50.8 | 4 | 25.4 | 101.6 |
| 32 | 1-1/4 | 158.7 | 35.1 | 28.4 | 41.1 | 43.2 | 14.2 | 63.5 | 63.5 | 4 | 25.4 | 111.3 |
| 40 | 1-1/2 | 177.8 | 40.9 | 31.75 | 44.5 | 49.5 | 15.7 | 69.85 | 73.15 | 4 | 28.4 | 124 |
| 50 | 2 | 215.9 | 52.6 | 38.1 | 57.15 | 62 | 17.5 | 104.6 | 91.9 | 8 | 25.4 | 165.1 |
| 65 | 2-1/2 | 244.3 | 62.7 | 41.1 | 63.5 | 74.7 | 19 | 123.9 | 104.6 | 8 | 28.4 | 190.5 |
1.Petrochemical industry
High - pressure reaction systems: Such as pipelines at the inlet and outlet of hydrogenation reactors and high - pressure separators.
Transport of corrosive media: Stainless steel (such as 316/316L) or alloy materials (such as Inconel) should be selected.
2.Power industry (thermal power/nuclear power)
High - temperature steam pipelines (≤538℃): Such as main steam bypasses and boiler feed water systems.
High - fatigue environments: Pipelines at the inlet and outlet of steam turbines require anti - vibration design.
3.Pharmaceutical and food industries
Transport of high - cleanliness fluids: 316L stainless steel is used, and the inner wall is polished (Ra≤0.8μm).
Parameter Requirements
Standard ANSI/ASME B16.5, B16.11 (Socket welding flange dimension standards)
Pressure rating Class 1500 (≈25MPa at normal temperature, check ASME B16.5 pressure-temperature ratings for high temperature)
Material Carbon steel (A105), Stainless steel (A182 F304/F316), Alloy steel (F11/F22)
Sealing surface RF (Raised face), RTJ (Ring joint face) - RTJ is recommended for high pressure
