Dimensions for Welding Neck Flanges 300 Class, Series B
Weld Neck flanges as per ASME B16.47/ANSI B16.47 300#/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 | Killo | |
| 26'' | 660.4 | 866.8 | To be | 88.9 | 144.5 | 665.2 | 701.7 | 736.6 | 32 | 34.9 | 803.3 | 181 |
| 28" | 711.2 | 920.7 | specified | 88.9 | 149.2 | 716.0 | 755.6 | 787.4 | 36 | 34.9 | 857.2 | 203 |
| 30" | 762 | 990.6 | by purchaser | 93.7 | 158.0 | 768.4 | 812.8 | 844.5 | 36 | 38.1 | 920.7 | 268 |
| 32" | 812.8 | 1054.1 | 103.2 | 168.3 | 819.2 | 863.6 | 901.7 | 32 | 41.3 | 977.9 | 330 | |
| 34" | 863.6 | 1108.1 | 103.2 | 173.0 | 869.9 | 917.6 | 952.5 | 36 | 41.3 | 1031.9 | 357 | |
| 36" | 914.4 | 1171.6 | 103.2 | 181.0 | 920.7 | 965.2 | 1009.6 | 32 | 44.4 | 1089.0 | 405 | |
| 42" | 1066.8 | 1333.5 | 119.1 | 204.8 | 1074.7 | 1117.6 | 1168.4 | 36 | 47.6 | 1244.6 | 502 | |
| 48" | 1219.2 | 1511.3 | 128.6 | 223.8 | 1227.1 | 1277.9 | 1327.1 | 40 | 50.8 | 1416.0 | 731 | |
| 54" | 1371.6 | 1673.2 | 136.5 | 239.7 | 1379.5 | 1435.1 | 1479.5 | 48 | 50.8 | 1578.0 | 898 | |
| 60" | 1524 | 1878.0 | 150.8 | 271.5 | 1531.9 | 1598.6 | 1651.0 | 40 | 60.3 | 1763.7 | 1311 |
Weld Neck flanges as per ASME B16.47/ANSI B16.47 300#/300 LBS in inches
| 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 | |
| 26'' | 26.0 | 341/8 | To be | 31/2 | 511/16 | 263/16 | 275/6 | 29 | 32 | 13/8 | 315/8 | 399 |
| 28" | 28.0 | 361/4 | specified by | 31/2 | 57/8 | 283/16 | 293/4 | 31 | 36 | 13/8 | 333/4 | 447 |
| 30" | 30.0 | 39 | purchaser | 311/16 | 67/32 | 301/4 | 32 | 331/4 | 36 | 11/2 | 361/4 | 590 |
| 32" | 32.0 | 411/2 | 41/16 | 65/8 | 321/4 | 34 | 351/2 | 32 | 15/8 | 381/2 | 727 | |
| 34" | 34.0 | 435/8 | 41/16 | 613/16 | 341/4 | 361/8 | 371/2 | 36 | 15/8 | 405/8 | 787 | |
| 36" | 36.0 | 461/8 | 41/16 | 71/8 | 361/4 | 38 | 393/4 | 32 | 13/4 | 427/8 | 893 | |
| 42" | 42.0 | 511/2 | 411/16 | 81/16 | 425/16 | 44 | 46 | 36 | 17/8 | 49 | 1106 | |
| 48" | 48.0 | 591/2 | 51/16 | 813/16 | 485/16 | 505/16 | 511/4 | 40 | 2 | 553/4 | 1611 | |
| 54" | 54.0 | 657/8 | 53/8 | 97/16 | 545/16 | 561/2 | 581/4 | 48 | 2 | 621/8 | 1979 | |
| 60" | 60.0 | 7315/16 | 515/16 | 1011/16 | 605/16 | 6215/16 | 65 | 40 | 23/8 | 697/16 | 2890 |
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