Dimensions for Welding Neck Flanges
300 lb/sq. in
Weld Neck flanges as per ASME B16.5/ANSI B16.5 400#/300 lbs in mm
| Pipe | Flange | Hub | Raised face | Drilling Template | Approx Weight | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nom. | OD | D | J | b | h | a | m | g | Number | I | K | |
| Size | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | Kilo | |
| 1/2" | 21.3 | 95.2 | 15.7 | 14.2 | 52.3 | 21.3 | 38.1 | 35 | 4 | 15.7 | 66.5 | 0.75 |
| 3/4'' | 26.7 | 117.3 | 20.8 | 15.7 | 57.1 | 26.7 | 47.7 | 42.9 | 4 | 19 | 82.5 | 1.26 |
| 1'' | 33.4 | 123.9 | 26.7 | 17.5 | 62 | 33.5 | 53.8 | 50.8 | 4 | 19 | 88.9 | 1.52 |
| 11/4” | 42.2 | 133.3 | 35.1 | 19 | 65 | 42.2 | 63.5 | 63.5 | 4 | 19 | 98.5 | 2.03 |
| 11/2” | 48.3 | 155.4 | 40.9 | 20.6 | 68.3 | 48.3 | 69.8 | 73.2 | 4 | 22.3 | 114.3 | 2.89 |
| 2" | 60.3 | 165.1 | 52.6 | 22.3 | 69.8 | 60.5 | 84 | 91.9 | 8 | 19 | 127 | 3.4 |
| 21/2” | 73 | 190.5 | 62.7 | 25.4 | 76.2 | 73.2 | 100 | 104.6 | 8 | 22.3 | 149.3 | 5.17 |
| 3" | 88.9 | 209.5 | 78 | 28.4 | 79.2 | 88.9 | 117.3 | 127 | 8 | 22.3 | 168.1 | 6.93 |
| 31/2” | 101.6 | 228.6 | 90.2 | 30.2 | 81 | 101.6 | 133.3 | 139.7 | 8 | 22.3 | 184.1 | 8.67 |
| 4" | 114.3 | 254 | 102.4 | 31.7 | 85.8 | 114.3 | 146 | 157.2 | 8 | 22.3 | 200.1 | 11.2 |
| 5" | 141.3 | 279.4 | 128.3 | 35 | 98.5 | 141.2 | 177.8 | 185.6 | 8 | 22.3 | 234.9 | 15.1 |
| 6" | 168.3 | 317.5 | 154.2 | 36.5 | 98.5 | 168.4 | 206.2 | 215.9 | 12 | 22.3 | 269.7 | 19.1 |
| 8" | 219.1 | 381 | 202.7 | 41.1 | 111.2 | 219.2 | 260.3 | 269.7 | 12 | 25.4 | 330.2 | 29.9 |
| 10” | 273 | 444.5 | 254.5 | 47.7 | 117.3 | 273.1 | 320.5 | 323.8 | 16 | 28.4 | 387.3 | 42.7 |
| 12” | 323.8 | 520.7 | 304.8 | 50.8 | 130 | 323.8 | 374.6 | 381 | 16 | 31.7 | 450.8 | 61.8 |
| 14” | 355.6 | 584.2 | To be | 53.8 | 142.7 | 355.6 | 425.4 | 412.7 | 20 | 31.7 | 514.3 | 85.8 |
| 16” | 406.4 | 647.7 | specified by | 57.1 | 146 | 406.4 | 482.6 | 469.9 | 20 | 35 | 571.5 | 106 |
| 18” | 457.2 | 711.2 | purchaser | 60.4 | 158.7 | 457.2 | 533.4 | 533.4 | 24 | 35 | 628.6 | 131 |
| 20” | 508 | 774.7 | 63.5 | 162 | 508 | 587.2 | 584.2 | 24 | 35 | 685.8 | 158 | |
| 24” | 609.6 | 914.4 | 69.8 | 168.6 | 609.6 | 701.5 | 692.2 | 24 | 41.1 | 812.8 | 230 |
Weld Neck flanges as per ASME B16.5/ANSI B16.5 400#/300 lbs in
| Pipe | Flange | Hub | Raised face | Drilling Template | Approx Weight | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nom. | OD | D | J | b | h | a | m | g | Number | I | K | ||||||
| Size | in. | in. | in. | in. | in. | in. | in. | in. | in. | in. | Pounds | ||||||
| 1/2" | 0.84 | 3.75 | 0.62 | 0.56 | 2.06 | 0.84 | 1.5 | 1.38 | 4 | 0.62 | 2.62 | 1.7 | |||||
| 3/4'' | 1.05 | 4.62 | 0.82 | 0.62 | 2.25 | 1.05 | 1.88 | 1.69 | 4 | 0.75 | 3.23 | 2.8 | |||||
| 1'' | 1.315 | 4.88 | 1.05 | 0.69 | 2.44 | 1.32 | 2.12 | 2 | 4 | 0.75 | 3.5 | 3.5 | |||||
| 11/4” | 1.66 | 5.25 | 1.38 | 0.75 | 2.56 | 1.66 | 2.5 | 2.5 | 4 | 0.75 | 3.88 | 4.5 | |||||
| 11/2” | 1.9 | 6.12 | 1.61 | 0.81 | 2.69 | 1.9 | 2.75 | 2.88 | 4 | 0.88 | 4.5 | 6.4 | |||||
| 2" | 2.375 | 6.5 | 2.07 | 0.88 | 2.75 | 2.38 | 3.31 | 3.62 | 8 | 0,75 | 5,00 | 7,5 | |||||
| 21/2” | 2.875 | 7.5 | 2.47 | 1 | 3 | 2.88 | 3.94 | 4.12 | 8 | 0.88 | 5.88 | 11.4 | |||||
| 3" | 3.5 | 8.25 | 3.07 | 1.12 | 3.12 | 3.5 | 4.62 | 5 | 8 | 0.88 | 6.62 | 15.3 | |||||
| 31/2” | 4 | 9 | 3.55 | 1.19 | 3.19 | 4 | 5.25 | 5.5 | 8 | 0.88 | 7.25 | 19.1 | |||||
| 4" | 4.5 | 10 | 4.03 | 1.25 | 3.38 | 4.5 | 5.75 | 6.19 | 8 | 0.88 | 7.88 | 24.7 | |||||
| 5" | 5.563 | 11 | 5.05 | 1.38 | 3.88 | 5.56 | 7 | 7.31 | 8 | 0.88 | 9,25 | 33.3 | |||||
| 6" | 6.625 | 12.5 | 6.07 | 1.44 | 3.88 | 6.63 | 8.12 | 8.5 | 12 | 0.88 | 10.62 | 42.4 | |||||
| 8" | 8.625 | 15 | 7.98 | 1.62 | 4.38 | 8.63 | 10.25 | 10.62 | 12 | 1 | 13 | 65.9 | |||||
| 10” | 10.75 | 17.5 | 10.02 | 1.88 | 4.62 | 10.75 | 12.62 | 12.75 | 16 | 1.12 | 15.25 | 94.1 | |||||
| 12” | 12.75 | 20.5 | 12 | 2 | 5.12 | 12.75 | 14.75 | 15 | 16 | 1.25 | 17.75 | 136 | |||||
| 14” | 14 | 23 | To be | 2.12 | 5.62 | 14 | 16.75 | 16.25 | 20 | 1.25 | 20.25 | 189 | |||||
| 16” | 16 | 25.5 | specified by | 2.25 | 5.75 | 16 | 19 | 18.5 | 20 | 1.38 | 22.5 | 234 | |||||
| 18” | 18 | 28 | puchaser | 2.38 | 6.25 | 18 | 21 | 21 | 24 | 1.38 | 24.75 | 289 | |||||
| 20” | 20 | 30.5 | 2.5 | 6.38 | 20 | 23.12 | 23 | 24 | 1.38 | 27 | 348 | ||||||
| 24” | 24 | 36 | 2.75 | 6.62 | 24 | 27.62 | 27.25 | 24 | 1.62 | 32 | 507 |
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