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| Quantity: | |
|---|---|
WN Flange
SDFL
| Nominal Size | Outer Diameter | Inner Diameter | Flange Ring Height | Hub Diameter at Base | Weld End OD | Flange wall thickness | Sealing Face Diameter | Sealing Face Height | Flange Overall Height | Central circle diameter | Number of Bolt Holes | Bolt Hole Diameter | |
| DN | NPS | A | B | C | F | E | G | D | J | I | |||
| 15 | 1/2 | 95.2 | 15.7 | 14.2 | 38.1 | 21.3 | 5.6 | 35 | 1.6 | 52.3 | 66.5 | 4 | 15.7 |
| 20 | 3/4 | 117.3 | 20.8 | 15.7 | 47.7 | 26.7 | 5.9 | 42.9 | 1.6 | 57.2 | 82.6 | 4 | 19 |
| 25 | 1 | 123.9 | 26.7 | 17.5 | 53.8 | 33.5 | 6.8 | 50.8 | 1.6 | 62 | 88.9 | 4 | 19 |
| 32 | 1-1/4 | 133.3 | 35.1 | 19 | 63.5 | 42.2 | 7.1 | 63.5 | 1.6 | 65 | 98.6 | 4 | 19 |
| 40 | 1-1/2 | 155.4 | 40.9 | 20.6 | 69.9 | 48.3 | 7.4 | 73.2 | 1.6 | 68.3 | 114.3 | 4 | 22.3 |
| 50 | 2 | 165.1 | 52.6 | 22.3 | 84 | 60.5 | 7.9 | 91.9 | 1.6 | 69.9 | 127 | 8 | 19 |
| 65 | 2-1/2 | 190.5 | 62.7 | 25.4 | 100 | 73.2 | 10.5 | 104.6 | 1.6 | 76.2 | 149.4 | 8 | 22.3 |
| 80 | 3 | 209.5 | 78 | 28.4 | 117.3 | 88.9 | 10.9 | 127 | 1.6 | 79.3 | 168.1 | 8 | 22.3 |
| 90 | 3-1/2 | 228.6 | 90.2 | 30.2 | 133.3 | 101.6 | 11.4 | 139.7 | 1.6 | 81 | 184.2 | 8 | 22.3 |
| 100 | 4 | 254 | 102.4 | 31.7 | 146 | 114.3 | 11.9 | 157.2 | 1.6 | 85.8 | 200.1 | 8 | 22.3 |
| 125 | 5 | 279.4 | 128.3 | 35 | 177.8 | 141.2 | 12.9 | 185.7 | 1.6 | 98.5 | 234.9 | 8 | 22.3 |
| 150 | 6 | 317.5 | 154.2 | 36.5 | 206.2 | 168.4 | 14.2 | 215.9 | 1.6 | 98.5 | 269.7 | 12 | 22.3 |
| 200 | 8 | 381 | 202.7 | 41.1 | 260.3 | 219.2 | 16.5 | 269.7 | 1.6 | 111.2 | 330.2 | 12 | 25.4 |
| 250 | 10 | 444.5 | 254.5 | 47.7 | 320.5 | 273 | 18.5 | 323.8 | 1.6 | 117.3 | 387.3 | 16 | 28.4 |
| 300 | 12 | 520.7 | 304.8 | 50.8 | 374.6 | 323.8 | 19 | 381 | 1.6 | 130 | 450.8 | 16 | 31.7 |
| 350 | 14 | 584.2 | 336.6 | 53.8 | 425.4 | 355.6 | 19 | 412.7 | 1.6 | 142.7 | 514.3 | 20 | 31.7 |
| 400 | 16 | 647.7 | 387.4 | 57.2 | 482.6 | 406.4 | 19 | 469.9 | 1.6 | 146 | 571.5 | 20 | 35 |
| 450 | 18 | 711.2 | 438.2 | 60.5 | 533.4 | 457.2 | 19 | 533.4 | 1.6 | 158.7 | 628.6 | 24 | 35 |
| 500 | 20 | 774.7 | 489 | 63.5 | 587.2 | 508 | 19 | 584.2 | 1.6 | 162 | 685.8 | 24 | 35 |
| 600 | 24 | 914.4 | 590.6 | 69.9 | 701.5 | 609.6 | 19 | 692.1 | 1.6 | 168.1 | 812.8 | 24 | 41.1 |
Applications:
1.High-Pressure and High-Temperature Systems:
(1)Oil & Gas Industry: Pipelines, wellheads, separators, reactors, heat exchangers.
(2)Petrochemical & Chemical Industry: Process piping, reaction vessels, high-pressure storage tanks, steam systems.
(3)Power Generation: Boiler feedwater, main steam lines, high-temperature/high-pressure valve connections.
(4)Shipbuilding & Offshore: Propulsion systems, fuel lines, ballast systems, critical high-pressure deck machinery.
2.Critical Junctions & Areas with Vibration/Displacement:
(1)Inlet/outlet connections for rotating equipment like pumps, compressors, turbines.
(2)Connections on either side of valves.
(3)Locations in piping systems subject to thermal expansion, mechanical vibration, or external loads like seismic activity.
3.Fluid Transport Systems Requiring High Integrity:
(1)Piping for hazardous or toxic fluids e.g., acids, alkalis, flammable gases.
(2)Piping for high-purity fluids e.g., pharmaceuticals, food processing - material compatibility and smooth bore are crucial.
4.Areas Requiring Frequent Disassembly for Inspection or Maintenance:
Although the welded joint is permanent, the flange-to-flange connection allows for disassembly of equipment or pipe sections.
