 |
| Quantity: | |
|---|---|
TH 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 | E | C | F | D | G | ||
| 15 | 1/2 | 88.9 | 60.5 | 15.7 | 4 | 17 | 11.2 | 30.2 | 15.7 | 35.1 | 1.6 |
| 20 | 3/4 | 98.6 | 69.9 | 15.7 | 4 | 22.5 | 12.7 | 38.1 | 15.7 | 42.9 | 1.6 |
| 25 | 1 | 108 | 79.3 | 15.7 | 4 | 29 | 14.2 | 49.3 | 17.5 | 50.8 | 1.6 |
| 32 | 1-1/4 | 117.3 | 88.9 | 15.7 | 4 | 37.5 | 15.7 | 58.7 | 20.6 | 63.5 | 1.6 |
| 40 | 1-1/2 | 127 | 98.6 | 15.7 | 4 | 43.5 | 17.5 | 65 | 22.4 | 73.15 | 1.6 |
| 50 | 2 | 152.4 | 120.7 | 19.1 | 4 | 55 | 19.1 | 77.7 | 25.4 | 91.9 | 1.6 |
| 65 | 2-1/2 | 177.8 | 139.7 | 19.1 | 4 | 71 | 22.4 | 90.4 | 28.4 | 104.6 | 1.6 |
| 80 | 3 | 190.5 | 152.4 | 19.1 | 4 | 83.5 | 23.9 | 108 | 30.2 | 127 | 1.6 |
| 90 | 3-1/2 | 215.9 | 177.8 | 19.1 | 8 | 96 | 23.9 | 122.2 | 31.75 | 139.7 | 1.6 |
| 100 | 4 | 228.6 | 190.5 | 19.1 | 8 | 108.5 | 23.9 | 134.9 | 33.3 | 157.2 | 1.6 |
| 125 | 5 | 254 | 215.9 | 22.4 | 8 | 134 | 23.9 | 163.6 | 36.6 | 185.7 | 1.6 |
| 150 | 6 | 279.4 | 241.3 | 22.4 | 8 | 159.5 | 25.4 | 192 | 39.6 | 215.9 | 1.6 |
Applications & Features of Threaded Flanges
Application Scenarios：
1.Low-pressure utility piping (water/gas), fire sprinkler systems for quick install
2.Chemical metering pumps, instrument air lines (≤NPS 2")
3.Wellhead sample points, gauge connections (no hot work required)
4.Sanitary clamp adapters for stainless hoses (EHEDG compliant)
5.Temporary ship piping, removable maintenance bypass lines
Key Features：
1.Bolt-free installation: Saves 60% labor vs. Welding
2.Tapered threads (NPT/BSPT) + PTFE sealant for leak-proof joints
3.Lock nuts/threadlocker resist vibration (<200Hz)
4.Reusable (>5 cycles): Replace gasket only for maintenance
5.30% thinner than WN flanges for tight spaces
Critical Warning：Threaded flanges are NOT universal! Misuse in high-pressure systems may cause thread stripping → catastrophic leaks.
| 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 | E | C | F | D | G | ||
| 15 | 1/2 | 88.9 | 60.5 | 15.7 | 4 | 17 | 11.2 | 30.2 | 15.7 | 35.1 | 1.6 |
| 20 | 3/4 | 98.6 | 69.9 | 15.7 | 4 | 22.5 | 12.7 | 38.1 | 15.7 | 42.9 | 1.6 |
| 25 | 1 | 108 | 79.3 | 15.7 | 4 | 29 | 14.2 | 49.3 | 17.5 | 50.8 | 1.6 |
| 32 | 1-1/4 | 117.3 | 88.9 | 15.7 | 4 | 37.5 | 15.7 | 58.7 | 20.6 | 63.5 | 1.6 |
| 40 | 1-1/2 | 127 | 98.6 | 15.7 | 4 | 43.5 | 17.5 | 65 | 22.4 | 73.15 | 1.6 |
| 50 | 2 | 152.4 | 120.7 | 19.1 | 4 | 55 | 19.1 | 77.7 | 25.4 | 91.9 | 1.6 |
| 65 | 2-1/2 | 177.8 | 139.7 | 19.1 | 4 | 71 | 22.4 | 90.4 | 28.4 | 104.6 | 1.6 |
| 80 | 3 | 190.5 | 152.4 | 19.1 | 4 | 83.5 | 23.9 | 108 | 30.2 | 127 | 1.6 |
| 90 | 3-1/2 | 215.9 | 177.8 | 19.1 | 8 | 96 | 23.9 | 122.2 | 31.75 | 139.7 | 1.6 |
| 100 | 4 | 228.6 | 190.5 | 19.1 | 8 | 108.5 | 23.9 | 134.9 | 33.3 | 157.2 | 1.6 |
| 125 | 5 | 254 | 215.9 | 22.4 | 8 | 134 | 23.9 | 163.6 | 36.6 | 185.7 | 1.6 |
| 150 | 6 | 279.4 | 241.3 | 22.4 | 8 | 159.5 | 25.4 | 192 | 39.6 | 215.9 | 1.6 |
Applications & Features of Threaded Flanges
Application Scenarios：
1.Low-pressure utility piping (water/gas), fire sprinkler systems for quick install
2.Chemical metering pumps, instrument air lines (≤NPS 2")
3.Wellhead sample points, gauge connections (no hot work required)
4.Sanitary clamp adapters for stainless hoses (EHEDG compliant)
5.Temporary ship piping, removable maintenance bypass lines
Key Features：
1.Bolt-free installation: Saves 60% labor vs. Welding
2.Tapered threads (NPT/BSPT) + PTFE sealant for leak-proof joints
3.Lock nuts/threadlocker resist vibration (<200Hz)
4.Reusable (>5 cycles): Replace gasket only for maintenance
5.30% thinner than WN flanges for tight spaces
Critical Warning：Threaded flanges are NOT universal! Misuse in high-pressure systems may cause thread stripping → catastrophic leaks.
