Dimensions for Welding Neck Flanges
900 lb/sq. in
Weld Neck Flanges as per ASME B16.5/ANSI B16.5 900#/900 LBS in mm.
| Drilling | Template | Approx | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I | k | Weight | ||||||||||
| mm | mm | Killo | ||||||||||
| 1/2" | 21.3 | 120.6 | 22.3 | 60.4 | 21.3 | 38.1 | 35 | 4 | 22.3 | 82.5 | 1.87 | |
| 3.4" | 26.7 | 130 | - | 25.4 | 69.8 | 26.7 | 44.4 | 42.9 | 4 | 22.3 | 88.9 | 2.56 |
| 1" | 33.4 | 149.3 | - | 28.4 | 73.1 | 33.4 | 52.3 | 50.8 | 4 | 25.4 | 101.6 | 3.74 |
| 1 1/4" | 42.2 | 158.7 | - | 28.4 | 73.1 | 42.2 | 63.5 | 63.5 | 4 | 25.4 | 111.2 | 4.33 |
| 1 1/2" | 48.3 | 177.8 | - | 31.7 | 82.5 | 48.3 | 69.8 | 73.1 | 4 | 28.4 | 123.9 | 5.94 |
| 2" | 60.3 | 215.9 | - | 38.1 | 101.6 | 60.5 | 104.6 | 91.9 | 8 | 25.4 | 165.1 | 10.8 |
| 2 1/2" | 73 | 244.3 | to | 41.1 | 104.6 | 73.2 | 123.9 | 104.6 | 8 | 28.4 | 190.5 | 15 |
| 3" | 88.9 | 241.3 | be | 38.1 | 101.6 | 88.9 | 127 | 127 | 8 | 25.4 | 190.5 | 13.7 |
| 4" | 114.3 | 292.1 | specified | 44.4 | 114.3 | 114.3 | 158.7 | 157.2 | 8 | 31.7 | 234.9 | 22.5 |
| 5" | 141.3 | 349.2 | by | 50.8 | 127 | 141.2 | 190.5 | 185.6 | 8 | 35 | 279.4 | 37.4 |
| 6" | 168.3 | 381 | purchaser | 55.6 | 139.7 | 168.4 | 234.9 | 215.9 | 12 | 31.7 | 317.5 | 47.7 |
| 8" | 219.1 | 469.9 | - | 63.5 | 162 | 219.2 | 298.4 | 269.7 | 12 | 38.1 | 393.7 | 81.3 |
| 10" | 273 | 546.1 | - | 69.8 | 184.1 | 273 | 368.3 | 323.8 | 16 | 38.1 | 469.9 | 119 |
| 12" | 323.8 | 609.6 | - | 79.2 | 200.1 | 323.8 | 419.1 | 381 | 20 | 38.1 | 533.4 | 157 |
| 14" | 355.6 | 641.3 | - | 85.8 | 212.8 | 355.6 | 450.8 | 412.7 | 20 | 41.1 | 558.8 | 180 |
| 16" | 406.4 | 704.8 | - | 88.9 | 215.9 | 406.4 | 508 | 469.9 | 20 | 44.4 | 615.9 | 217 |
| 18" | 457.2 | 787.4 | - | 101.6 | 228.6 | 457.2 | 565.1 | 533.4 | 20 | 50.8 | 685.8 | 292 |
| 20 | 508 | 857.2 | - | 107.9 | 247.6 | 508 | 622.3 | 584.2 | 20 | 53.8 | 749.3 | 362 |
| 24" | 609.6 | 1041.4 | - | 139.7 | 292.1 | 609.6 | 749.3 | 692.1 | 20 | 66.5 | 901.7 | 665 |
Weld Neck Flanges as per ASME B16.5/ANSI B16.5 900#/900 LBS in inches
| Drilling | Template | Approx | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| I | k | Weight | ||||||||||
| in. | in | Pounds | ||||||||||
| 1/2" | 0.84 | 4.75 | 0.88 | 2.38 | 0.84 | 1.5 | 1.38 | 4 | 0.88 | 3.25 | 4.1 | |
| 3.4" | 1.05 | 5.12 | - | 1 | 2.75 | 1.05 | 1.75 | 1.69 | 4 | 0.88 | 3.5 | 5.6 |
| 1" | 1.315 | 5.88 | - | 1.12 | 2.88 | 1.32 | 2.06 | 2 | 4 | 1 | 4 | 8.2 |
| 1 1/4" | 1.66 | 6.25 | - | 1.12 | 2.88 | 1.66 | 2.5 | 2.5 | 4 | 1 | 4.38 | 9.5 |
| 1 1/2" | 1.9 | 7 | - | 1.25 | 3.25 | 1.9 | 2.75 | 2.88 | 4 | 1.12 | 4.88 | 13.1 |
| 2" | 2.375 | 8.5 | - | 1.5 | 4 | 2.38 | 4.12 | 3.62 | 8 | 1 | 6.5 | 23.8 |
| 2 1/2" | 2.875 | 9.62 | to | 1.62 | 4.12 | 2.88 | 4.88 | 4.12 | 8 | 1.12 | 7.5 | 33 |
| 3" | 3.5 | 9.5 | be | 1.5 | 4 | 3.5 | 5 | 5 | 8 | 1 | 7.5 | 30.2 |
| 4" | 4.5 | 11.5 | specified | 1.75 | 4.5 | 4.5 | 6.25 | 6.19 | 8 | 1.25 | 9.25 | 49.6 |
| 5" | 5.563 | 13.75 | by | 2 | 5 | 5.56 | 7.5 | 7.31 | 8 | 1.38 | 11 | 82.4 |
| 6" | 6.625 | 15 | purchaser | 2.19 | 5.5 | 6.63 | 9.25 | 8.5 | 12 | 1.25 | 12.5 | 105 |
| 8" | 8.625 | 18.5 | - | 2.5 | 6.38 | 8.63 | 11.75 | 10.62 | 12 | 1.5 | 15.5 | 179 |
| 10" | 10.75 | 21.5 | - | 2.75 | 7.25 | 10.75 | 14.5 | 12.75 | 16 | 1.5 | 18.5 | 262 |
| 12" | 12.75 | 24 | - | 3.12 | 7.88 | 12.75 | 16.5 | 15 | 20 | 1.5 | 21 | 346 |
| 14" | 14 | 25.25 | - | 3.38 | 8.38 | 14 | 17.75 | 16.25 | 20 | 1.62 | 22 | 379 |
| 16" | 16 | 27.75 | - | 3.5 | 8.5 | 16 | 20 | 18.5 | 20 | 1.75 | 24.25 | 478 |
| 18" | 18 | 31 | - | 4 | 9 | 18 | 22.25 | 21 | 20 | 2 | 27 | 643 |
| 20 | 20 | 33.75 | - | 4.25 | 9.75 | 20 | 24.5 | 23 | 20 | 2.12 | 29.5 | 797 |
| 24" | 24 | 41 | - | 5.5 | 11.5 | 24 | 29.5 | 27.25 | 20 | 2.62 | 35.5 | 665 |
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