 |
| 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 | NPS0 | A | B | C | D | R | K | F | G | I | J | |
| 15 | 1/2 | 95.2 | 15.7 | 14.2 | 22.3 | 22.4 | 9.6 | 38.1 | 35.1 | 4 | 15.7 | 66.5 |
| 20 | 3/4 | 117.3 | 20.8 | 15.7 | 25.4 | 27.7 | 11.1 | 47.7 | 42.9 | 4 | 19.1 | 82.6 |
| 25 | 1 | 123.9 | 26.7 | 17.5 | 26.9 | 34.5 | 12.7 | 53.8 | 50.8 | 4 | 19.1 | 88.9 |
| 32 | 1-1/4 | 133.3 | 35.1 | 19 | 26.9 | 43.2 | 14.2 | 63.5 | 63.5 | 4 | 19.1 | 98.6 |
| 40 | 1-1/2 | 155.4 | 40.9 | 20.6 | 30.2 | 49.5 | 15.7 | 69.85 | 73.15 | 4 | 22.3 | 114.3 |
| 50 | 2 | 165.1 | 52.6 | 22.3 | 33.2 | 62 | 17.5 | 84 | 91.9 | 8 | 19.1 | 127 |
| 65 | 2-1/2 | 190.5 | 62.7 | 25.4 | 38.1 | 74.7 | 19 | 100 | 104.6 | 8 | 22.3 | 149.4 |
| 80 | 3 | 209.5 | 78 | 28.4 | 42.9 | 90.7 | 20.6 | 117.3 | 127 | 8 | 22.3 | 168.1 |
Application: Small-Bore High-Purity Systems
High-Purity Pipelines:
(1)Semiconductor gas lines (no internal crevices).
(2)Pharma steam distribution (SIP - Steam-in-Place compatible).
Vibration-Resistant Connections:
(1)Compressor lube oil lines (DN15-DN50).
(2)Hydraulic power units in aerospace.
Characteristics
Crevice-Free Joint:
(1)Pipe inserts into flange socket, fillet-welded externally.
(2)Smooth bore prevents contamination buildup.
High Pressure Tolerance:
(1)Max: Class 6000 (for DN15) @ 20°C.
(2)Caution: Gap expansion at >300°C risks weld cracking.
Installation Precision:
(1)Mandatory 1.5mm gap between pipe & socket base for thermal expansion.
(2)Misalignment causes stress concentration.
| 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 | NPS0 | A | B | C | D | R | K | F | G | I | J | |
| 15 | 1/2 | 95.2 | 15.7 | 14.2 | 22.3 | 22.4 | 9.6 | 38.1 | 35.1 | 4 | 15.7 | 66.5 |
| 20 | 3/4 | 117.3 | 20.8 | 15.7 | 25.4 | 27.7 | 11.1 | 47.7 | 42.9 | 4 | 19.1 | 82.6 |
| 25 | 1 | 123.9 | 26.7 | 17.5 | 26.9 | 34.5 | 12.7 | 53.8 | 50.8 | 4 | 19.1 | 88.9 |
| 32 | 1-1/4 | 133.3 | 35.1 | 19 | 26.9 | 43.2 | 14.2 | 63.5 | 63.5 | 4 | 19.1 | 98.6 |
| 40 | 1-1/2 | 155.4 | 40.9 | 20.6 | 30.2 | 49.5 | 15.7 | 69.85 | 73.15 | 4 | 22.3 | 114.3 |
| 50 | 2 | 165.1 | 52.6 | 22.3 | 33.2 | 62 | 17.5 | 84 | 91.9 | 8 | 19.1 | 127 |
| 65 | 2-1/2 | 190.5 | 62.7 | 25.4 | 38.1 | 74.7 | 19 | 100 | 104.6 | 8 | 22.3 | 149.4 |
| 80 | 3 | 209.5 | 78 | 28.4 | 42.9 | 90.7 | 20.6 | 117.3 | 127 | 8 | 22.3 | 168.1 |
Application: Small-Bore High-Purity Systems
High-Purity Pipelines:
(1)Semiconductor gas lines (no internal crevices).
(2)Pharma steam distribution (SIP - Steam-in-Place compatible).
Vibration-Resistant Connections:
(1)Compressor lube oil lines (DN15-DN50).
(2)Hydraulic power units in aerospace.
Characteristics
Crevice-Free Joint:
(1)Pipe inserts into flange socket, fillet-welded externally.
(2)Smooth bore prevents contamination buildup.
High Pressure Tolerance:
(1)Max: Class 6000 (for DN15) @ 20°C.
(2)Caution: Gap expansion at >300°C risks weld cracking.
Installation Precision:
(1)Mandatory 1.5mm gap between pipe & socket base for thermal expansion.
(2)Misalignment causes stress concentration.
