Marine Equipment
ASME B16.5 Welding Neck Flanges
Dimension B corresponds to the pipe inside diameter.Values quoted assume 40S/Standard wall thickness. Weights are based on manufacturer’s data and are approximate. Flat face flanges may be...
ASME B16.5 Welding Neck Flanges
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China ASME B16.5 Welding Neck Flanges:
Dimension B corresponds to the pipe inside diameter.Values quoted assume 40S/Standard wall thickness.
Weights are based on manufacturer’s data and are approximate.
Flat face flanges may be provided at full thickness,C,or with raised face removed (the latter is nonstandard).
Specification:
| Pipe Welding Neck Flange | Flange Data | Hub Data | Raised Face | Drilling Data | |||||||
| Nominal | Outside Diameter | A | B | C | D | E | F | G | H | I | J |
| Overall | Inside | Flange | Overall | Diameter | Hub | Face | Number | Bolt Hole | Diameter of Circle | ||
| in | in | in | in | in | in | in | in | in | in | in | |
| 1/2 | 0.84 | 3.5 | 0.62 | 0.44 | 1.88 | 0.84 | 1.19 | 1.38 | 4 | 0.62 | 2.38 |
| 21.3 | 88.9 | 15.7 | 11.2 | 47.8 | 21.3 | 30.2 | 35 | 15.7 | 60.45 | ||
| 3/4 | 1.05 | 3.88 | 0.82 | 0.5 | 2.06 | 1.05 | 1.5 | 1.69 | 4 | 0.62 | 2.75 |
| 26.7 | 98.6 | 20.8 | 12.7 | 52.3 | 26.7 | 38.1 | 42.9 | 15.7 | 69.85 | ||
| 1 | 1.315 | 4.25 | 1.05 | 0.56 | 2.19 | 1.32 | 1.94 | 2 | 4 | 0.62 | 3.12 |
| 33.4 | 108 | 26.7 | 14.2 | 55.6 | 33.5 | 49.3 | 50.8 | 15.7 | 79.25 | ||
| 1 1/4 | 1.66 | 4.62 | 117.3 | 0.62 | 15.7 | 57.15 | 2.31 | 2.5 | 4 | 0.62 | 3.5 |
| 42.2 | 117.3 | 1.38 | 15.7 | 2.25 | 1.66 | 58.7 | 63.5 | 15.7 | 88.9 | ||
| 1 1/2 | 1.9 | 5 | 1.61 | 0.69 | 2.44 | 1.9 | 2.56 | 2.88 | 4 | 0.62 | 3.88 |
| 48.3 | 127 | 40.9 | 17.5 | 62 | 48.3 | 65 | 73.15 | 15.7 | 98.6 | ||
| 2 | 2.375 | 6 | 2.07 | 0.75 | 2.5 | 2.38 | 3.06 | 3.62 | 4 | 0.75 | 4.75 |
| 60.3 | 152.4 | 52.6 | 19.1 | 63.5 | 60.45 | 77.7 | 91.9 | 19.1 | 120.7 | ||
| 2 1/2 | 2.875 | 7 | 2.47 | 0.88 | 2.75 | 2.88 | 3.56 | 4.12 | 4 | 0.75 | 5.5 |
| 73 | 177.8 | 62.7 | 22.4 | 69.85 | 73.15 | 90.4 | 104.6 | 19.1 | 139.7 | ||
| 3 | 3.5 | 7.5 | 3.07 | 0.94 | 2.75 | 3.5 | 4.25 | 5 | 4 | 0.75 | 6 |
| 88.9 | 190.5 | 78 | 23.9 | 69.85 | 88.9 | 108 | 127 | 19.1 | 152.4 | ||
| 3 1/2 | 4 | 8.5 | 3.55 | 0.94 | 2.81 | 4 | 4.81 | 5.5 | 8 | 0.75 | 7 |
| 101.6 | 215.9 | 90.2 | 23.9 | 71.4 | 101.6 | 122.2 | 139.7 | 19.1 | 177.8 | ||
| 4 | 4.5 | 9 | 4.03 | 0.94 | 3 | 4.5 | 5.31 | 6.19 | 8 | 0.75 | 7.5 |
| 114.3 | 228.6 | 102.4 | 23.9 | 76.2 | 114.3 | 134.9 | 157.2 | 19.1 | 190.5 | ||
| 5 | 5.563 | 10 | 5.05 | 0.94 | 3.5 | 5.56 | 6.44 | 7.31 | 8 | 0.88 | 8.5 |
| 141.3 | 254 | 128.3 | 23.9 | 88.9 | 141.2 | 163.6 | 185.7 | 22.4 | 215.9 | ||
| 6 | 6.625 | 11 | 6.07 | 1 | 3.5 | 6.63 | 7.56 | 8.5 | 8 | 0.88 | 9.5 |
| 168.3 | 279.4 | 154.2 | 25.4 | 88.9 | 168.4 | 192 | 215.9 | 22.4 | 241.3 | ||
| 8 | 8.625 | 13.5 | 7.98 | 1.12 | 4 | 8.63 | 9.69 | 10.62 | 8 | 0.88 | 11.75 |
| 219.1 | 342.9 | 202.7 | 28.4 | 101.6 | 219.2 | 246.1 | 269.7 | 22.4 | 298.5 | ||
| 10 | 10.75 | 16 | 10.02 | 1.19 | 4 | 10.75 | 12 | 12.75 | 12 | 1 | 14.25 |
| 273 | 406.4 | 254.5 | 30.2 | 101.6 | 273 | 304.8 | 323.9 | 25.4 | 362 | ||
| 12 | 12.75 | 19 | 12 | 1.25 | 4.5 | 12.75 | 14.38 | 15 | 12 | 1 | 17 |
| 323.8 | 482.6 | 304.8 | 31.75 | 114.3 | 323.8 | 365.3 | 381 | 25.4 | 431.8 | ||
| 14 | 14 | 21 | To be specified by Purchaser | 1.38 | 5 | 14 | 15.75 | 16.25 | 12 | 1.12 | 18.75 |
| 355.6 | 533.4 | 35.1 | 127 | 355.6 | 400.1 | 412.7 | 28.4 | 476.3 | |||
| 16 | 16 | 23.5 | 1.44 | 5 | 16 | 18 | 18.5 | 16 | 1.12 | 21.25 | |
| 406.4 | 596.9 | 36.6 | 127 | 406.4 | 457.2 | 469.9 | 28.4 | 539.8 | |||
| 18 | 18 | 25 | 1.56 | 5.5 | 18 | 19.88 | 21 | 16 | 1.25 | 22.75 | |
| 457.2 | 635 | 39.6 | 139.7 | 457.2 | 505 | 533.4 | 31.75 | 577.9 | |||
| 20 | 20 | 27.5 | 1.69 | 5.69 | 20 | 22 | 23 | 20 | 1.25 | 25 | |
| 508 | 698.5 | 42.9 | 144.5 | 508 | 558.8 | 584.2 | 31.75 | 635 | |||
| 24 | 24 | 32 | 1.88 | 6 | 24 | 26.12 | 27.25 | 20 | 1.38 | 29.5 | |
| 609.6 | 812.8 | 47.8 | 152.4 | 609.6 | 663.4 | 692.1 | 35.1 | 749.3 | |||
