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Type of Flanges
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ASME B 16.47 A
ASME B16.47 B
WN Flange Bore
Figure 8 Blanks
Ring Joint Facing
AWWA Steel Ring
AWWA Steel hub
Approx Weight
Gaskets
Bolts & Nuts
PL Flanges (EN1092.1)
WN Flanges (EN1092.1)
SO Flanges (EN1092.1)
Th Flanges (EN1092.1)
BL Flanges (EN1092.1)
Backing Rings

ASME B16.47 B 

                                                                                              f =2mm on class 75, 150 &300 and =7mm on higher
Dimesions of  ASME B16.47 flanges - Series B 

Class 75
DN  NPS Overall Diameter  Thickness (Min.) C Overall Lenght  Diameter at Bevel Diameter of Hub Diameter of Face Number of Bolts Diameter of Bolt Holes  Diameter of Bolt Circle  Fillet Radius( Min.)
　 　 A WN BL D E F G n  I J R
650 26 760 31.9 31.9 57 661.9 676 705 36 19.05 723.9 8
700 28 815 31.9 31.9 60 712.7 727 756 40 19.05 774.7 8
750 30 865 31.9 31.9 64 763.5 778 806 44 19.05 825.5 8
800 32 915 33.5 35.0 68 814.3 829 857 48 19.05 876.3 8
850 34 965 33.5 36.6 72 865.1 879 908 52 19.05 927.1 8
900 36 1035 35.0 40.9 84 915.9 935 965 40 22.23 992.2 10
950 38 1085 36.6 43.0 87 966.7 986 1016 40 22.23 1043.0 10
1000 40 1135 36.6 43.0 91 1017.5 1037 1067 44 22.23 1093.8 10
1050 42 1185 38.2 46.3 94 1068.3 1087 1118 48 22.23 1144.6 10
1100 44 1250 41.4 47.7 103 1119.1 1140 1175 36 25.4 1203.3 10
1150 46 1300 43.0 49.3 106 1169.9 1191 1226 40 25.4 1254.1 10
1200 48 1355 44.6 52.5 110 1220.7 1241 1276 44 25.4 1304.9 10
1250 50 1405 46.2 54.1 114 1271.5 1294 1327 44 25.4 1355.7 10
1300 52 1455 46.2 55.7 119 1322.3 1345 1378 48 25.4 1409.7 10
1350 54 1510 47.8 58.9 124 1373.1 1397 1429 48 25.4 1460.5 10
1400 56 1575 49.3 60.4 133 1423.9 1451 1486 40 28.58 1520.8 11
1450 58 1625 50.9 62.0 137 1474.7 1502 1537 44 28.58 1571.6 11
1500 60 1675 54.1 65.2 143 1525.5 1553 1588 44 28.58 1622.4 11

Class 150
DN  NPS Overall Diameter  Thickness (Min.) C Overall Lenght  Diameter at Bevel Diameter of Hub Diameter of Face Number of Bolts Diameter of Bolt Holes  Diameter of Bolt Circle  Fillet Radius( Min.)
　 　 A WN BL D E F G n  I J R
650 26 785 39.8 43.0 87 661.9 684 711 36 22.23 744.5 10
700 28 835 43.0 46.2 94 712.7 735 762 40 22.23 795.3 10
750 30 885 43.0 49.3 98 763.5 787 813 44 22.23 846.1 10
800 32 940 44.6 52.5 106 814.3 840 864 48 22.23 900.1 10
850 34 1005 47.7 55.7 109 865.1 892 921 40 25.4 957.3 10
900 36 1055 50.9 57.3 116 915.9 945 972 44 25.4 1009.6 10
950 38 1125 52.5 62.0 122 968.2 997 1022 40 28.58 1070.0 10
1000 40 1175 54.1 65.2 127 1019.0 1049 1080 44 28.58 1120.8 10
1050 42 1225 57.3 66.8 132 1069.8 1102 1130 48 28.58 1171.6 11
1100 44 1275 58.9 70.0 135 1120.6 1153 1181 52 28.58 1222.4 11
1150 46 1340 60.4 73.1 143 1171.4 1205 1235 40 31.75 1284.3 11
1200 48 1390 63.6 76.3 148 1222.2 1257 1289 44 31.75 1335.1 11
1250 50 1445 66.8 79.5 152 1273.0 1308 1340 48 31.75 1385.9 11
1300 52 1495 68.4 82.7 156 1323.8 1360 1391 52 31.75 1436.7 11
1350 54 1550 70.0 85.8 160 1374.6 1413 1441 56 31.75 1492.2 11
1400 56 1600 71.6 89.0 165 1425.4 1465 1492 60 31.75 1543.0 14
1450 58 1675 73.1 91.9 173 1476.2 1516 1543 48 34.92 1611.3 14
1500 60 1725 74.7 95.4 178 1527.0 1570 1600 52 34.92 1662.1 14

Class 300
DN  NPS Overall Diameter  Thickness (Min.) C Overall Lenght  Diameter at Bevel Diameter of Hub Diameter of Face Number of Bolts Diameter of Bolt Holes  Diameter of Bolt Circle  Fillet Radius( Min.)
　 　 A WN BL D E F G n  I J R
650 26 865 87.4 87.4 168 665.2 702 737 32 34.9 803.3 14
700 28 920 87.4 87.4 148 716.0 756 787 36 34.9 857.2 14
750 30 990 92.1 92.1 156 768.4 813 845 36 38.1 920.8 14
800 32 1055 101.6 101.6 167 819.2 864 902 32 41.28 977.9 16
850 34 1110 101.6 101.6 171 870.0 918 953 36 41.28 1031.9 16
900 36 1170 101.6 101.6 179 920.8 965 1010 32 44.45 1089.0 16
950 38 1220 109.6 109.6 165 971.6 1016 1060 36 44.45 1139.8 16
1000 40 1275 114.3 114.3 197 1022.4 1067 1114 40 44.45 1190.6 16
1050 42 1335 117.5 117.5 203 1074.7 1118 1168 36 47.63 1244.6 16
1100 44 1385 125.5 125.5 213 1125.5 1173 1219 40 47.63 1295.4 16
1150 46 1460 127.0 128.6 221 1176.3 1229 1270 36 50.8 1365.2 16
1200 48 1510 127.0 133.4 222 1227.1 1278 1327 40 50.8 1416.0 16
1250 50 1560 136.6 138.2 233 1277.9 1330 1378 44 50.8 1466.8 16
1300 52 1615 141.3 142.6 241 1328.7 1383 1429 48 50.8 1517.6 16
1350 54 1675 135.0 147.7 238 1379.5 1435 1480 48 50.8 1578.0 16
1400 56 1765 152.4 155.4 267 1430.3 1494 1537 36 60.33 1651.0 17
1450 58 1825 152.4 160.4 273 1481.1 1548 1594 40 60.33 1712.9 17
1500 60 1880 149.3 165.1 270 1557.3 1599 1651 40 60.33 1763.7 17

Class 400
DN  NPS Overall Diameter  Thickness (Min.) C Overall Lenght  Diameter at Bevel Diameter of Hub Diameter of Face Number of Bolts Diameter of Bolt Holes  Diameter of Bolt Circle  Fillet Radius( Min.)
　 　 A WN BL D E F G n  I J R
650 26 850 88.9 88.9 149 660.4 689 711 28 38.1 781.0 11
700 28 915 95.3 95.3 159 711.2 740 762 24 41.28 838.2 13
750 30 970 101.6 101.6 170 762.0 794 819 28 41.28 895.4 13
800 32 1035 108.0 108.0 179 812.8 845 873 28 44.45 952.5 13
850 34 1085 111.2 111.2 187 863.6 899 927 32 44.45 1003.3 14
900 36 1155 119.1 119.1 200 914.4 952 981 28 47.63 1066.8 14

Class 600
DN  NPS Overall Diameter  Thickness (Min.) C Overall Lenght  Diameter at Bevel Diameter of Hub Diameter of Face Number of Bolts Diameter of Bolt Holes  Diameter of Bolt Circle  Fillet Radius( Min.)
　 　 A WN BL D E F G n  I J R
650 26 850 111.2 111.3 181 660.4 698 727 28 44.45 806.4 11
700 28 950 115.9 115.9 190 711.2 752 784 28 47.63 863.6 13
750 30 1020 125.5 127.0 205 762.0 806 841 28 50.8 927.1 13
800 32 1085 130.2 134.9 216 812.8 860 895 28 53.97 984.2 13
850 34 1160 141.3 144.2 233 863.6 914 953 24 60.33 1054.1 14
900 36 1215 146.1 150.9 243 914.4 968 1010 28 60.33 1104.9 14

Class 900
DN  NPS Overall Diameter  Thickness (Min.) C Overall Lenght  Diameter at Bevel Diameter of Hub Diameter of Face Number of Bolts Diameter of Bolt Holes  Diameter of Bolt Circle  Fillet Radius( Min.)
　 　 A WN BL D E F G n  I J R
650 26 1020 135.0 154.0 259 660.4 743 762 20 66.68 901.7 11
700 28 1105 147.7 166.7 276 711.2 797 819 20 73.02 971.6 13
750 30 1180 155.6 176.1 289 762.0 851 876 20 79.37 1035.0 13
800 32 1240 160.4 186.0 303 812.8 908 927 20 79.37 1092.2 13
850 34 1315 171.5 195.0 319 863.6 962 991 20 85.73 1155.7 14
900 36 1345 173.1 201.7 325 914.4 1016 1029 24 79.37 1200.2 14

Genuine knowledge comes from practice - Karl Marx
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