ASME B16.47 Series B flange dimensions
Large-diameter weld neck and blind flanges, 26 to 60 inch, compact flanges with more, smaller bolts and a smaller outside diameter, common on compressor and pipeline work. Every dimension in mm, with a drawing made to scale.
B16.47 Series B (API 605) flange finder
Choose size and class. The cross-section and bolt pattern redraw to scale.
Flange dimension finder
Every ASME B16.5 dimension for weld neck, slip-on, socket weld, threaded, lap joint and blind flanges, ½ to 24 inch, Class 150 to 2500, and ASME B16.47 Series A and B weld neck and blind flanges, 26 to 60 inch. The section redraws to scale as you change type, size and class.
Dimensions per ASME B16.5 (½ to 24 inch) and ASME B16.47 (26 to 60 inch). The raised face is not included in thickness or hub length. Matching stud bolts come from Teshi Fasteners as a set.
Series B Class 150, 26 to 60 inch
| Size | O | T weld neck | T blind | R | X | A | Y | W (PCD) | Bolts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26" (650 NB) | 785.0 | 39.8 | 43.0 | 711.0 | 684.0 | 661.9 | 87.0 | 744.5 | 36 × 3/4" | Quote |
| 28" (700 NB) | 835.0 | 43.0 | 46.2 | 762.0 | 735.0 | 712.7 | 94.0 | 795.3 | 40 × 3/4" | Quote |
| 30" (750 NB) | 885.0 | 43.0 | 49.3 | 813.0 | 787.0 | 763.5 | 98.0 | 846.1 | 44 × 3/4" | Quote |
| 32" (800 NB) | 940.0 | 44.6 | 52.5 | 864.0 | 840.0 | 814.3 | 106.0 | 900.1 | 48 × 3/4" | Quote |
| 34" (850 NB) | 1005.0 | 47.7 | 55.7 | 921.0 | 892.0 | 865.1 | 109.0 | 957.3 | 40 × 7/8" | Quote |
| 36" (900 NB) | 1055.0 | 50.9 | 57.3 | 972.0 | 945.0 | 915.9 | 116.0 | 1009.6 | 44 × 7/8" | Quote |
| 38" (950 NB) | 1125.0 | 52.5 | 62.0 | 1022.0 | 997.0 | 968.2 | 122.0 | 1070.0 | 40 × 1" | Quote |
| 40" (1000 NB) | 1175.0 | 54.1 | 65.2 | 1080.0 | 1049.0 | 1019.0 | 127.0 | 1120.8 | 44 × 1" | Quote |
| 42" (1050 NB) | 1225.0 | 57.3 | 66.8 | 1130.0 | 1102.0 | 1069.8 | 132.0 | 1171.6 | 48 × 1" | Quote |
| 44" (1100 NB) | 1275.0 | 58.9 | 70.0 | 1181.0 | 1153.0 | 1120.6 | 135.0 | 1222.4 | 52 × 1" | Quote |
| 46" (1150 NB) | 1340.0 | 60.4 | 73.1 | 1235.0 | 1205.0 | 1171.4 | 143.0 | 1284.3 | 40 × 1-1/8" | Quote |
| 48" (1200 NB) | 1390.0 | 63.6 | 76.3 | 1289.0 | 1257.0 | 1222.2 | 148.0 | 1335.1 | 44 × 1-1/8" | Quote |
| 50" (1250 NB) | 1445.0 | 66.8 | 79.5 | 1340.0 | 1308.0 | 1273.0 | 152.0 | 1385.9 | 48 × 1-1/8" | Quote |
| 52" (1300 NB) | 1495.0 | 68.4 | 82.7 | 1391.0 | 1360.0 | 1323.8 | 156.0 | 1436.7 | 52 × 1-1/8" | Quote |
| 54" (1350 NB) | 1550.0 | 70.0 | 85.8 | 1441.0 | 1413.0 | 1374.6 | 160.0 | 1492.2 | 56 × 1-1/8" | Quote |
| 56" (1400 NB) | 1600.0 | 71.6 | 89.0 | 1492.0 | 1465.0 | 1425.4 | 165.0 | 1543.0 | 60 × 1-1/8" | Quote |
| 58" (1450 NB) | 1675.0 | 73.1 | 91.9 | 1543.0 | 1516.0 | 1476.2 | 173.0 | 1611.3 | 48 × 1-1/4" | Quote |
| 60" (1500 NB) | 1725.0 | 74.7 | 95.4 | 1600.0 | 1570.0 | 1527.0 | 178.0 | 1662.1 | 52 × 1-1/4" | Quote |
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Series B Class 300, 26 to 60 inch
| Size | O | T weld neck | T blind | R | X | A | Y | W (PCD) | Bolts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26" (650 NB) | 866.6 | 87.4 | 87.4 | 736.6 | 701.5 | 665.2 | 143.0 | 803.1 | 32 × 1-1/4" | Quote |
| 28" (700 NB) | 920.8 | 87.4 | 87.4 | 787.4 | 755.6 | 716.0 | 147.6 | 857.2 | 36 × 1-1/4" | Quote |
| 30" (750 NB) | 990.6 | 92.2 | 92.2 | 844.5 | 812.8 | 768.3 | 156.5 | 920.8 | 36 × 1-3/8" | Quote |
| 32" (800 NB) | 1054.1 | 101.6 | 101.6 | 901.7 | 863.6 | 819.1 | 166.6 | 977.9 | 32 × 1-1/2" | Quote |
| 34" (850 NB) | 1107.9 | 101.6 | 101.6 | 952.5 | 917.4 | 869.9 | 171.4 | 1031.7 | 36 × 1-1/2" | Quote |
| 36" (900 NB) | 1171.4 | 101.6 | 101.6 | 1009.6 | 965.2 | 920.8 | 179.3 | 1089.2 | 32 × 1-5/8" | Quote |
| 38" (950 NB) | 1222.2 | 109.5 | 109.5 | 1060.5 | 1016.0 | 971.5 | 190.5 | 1140.0 | 36 × 1-5/8" | Quote |
| 40" (1000 NB) | 1273.0 | 114.3 | 114.3 | 1114.6 | 1066.8 | 1022.3 | 196.8 | 1190.8 | 40 × 1-5/8" | Quote |
| 42" (1050 NB) | 1333.5 | 117.6 | 117.6 | 1168.4 | 1117.6 | 1074.7 | 203.2 | 1244.6 | 36 × 1-3/4" | Quote |
| 44" (1100 NB) | 1384.3 | 125.5 | 125.5 | 1219.2 | 1173.2 | 1125.5 | 212.9 | 1295.4 | 40 × 1-3/4" | Quote |
| 46" (1150 NB) | 1460.5 | 127.0 | 128.5 | 1270.0 | 1228.9 | 1176.3 | 220.7 | 1365.2 | 36 × 1-7/8" | Quote |
| 48" (1200 NB) | 1511.3 | 127.0 | 133.3 | 1327.1 | 1277.9 | 1227.1 | 222.2 | 1416.0 | 40 × 1-7/8" | Quote |
| 50" (1250 NB) | 1562.1 | 136.7 | 138.2 | 1377.9 | 1330.5 | 1277.9 | 233.4 | 1466.8 | 44 × 1-7/8" | Quote |
| 52" (1300 NB) | 1612.9 | 141.2 | 142.5 | 1428.8 | 1382.8 | 1328.7 | 241.3 | 1517.6 | 48 × 1-7/8" | Quote |
| 54" (1350 NB) | 1673.4 | 135.1 | 147.6 | 1479.5 | 1435.1 | 1379.5 | 238.3 | 1577.8 | 48 × 1-7/8" | Quote |
| 56" (1400 NB) | 1765.3 | 152.4 | 155.4 | 1536.7 | 1493.8 | 1430.3 | 266.7 | 1651.0 | 36 × 2-1/4" | Quote |
| 58" (1450 NB) | 1827.3 | 152.4 | 160.3 | 1593.8 | 1547.9 | 1481.1 | 273.1 | 1713.0 | 40 × 2-1/4" | Quote |
| 60" (1500 NB) | 1878.1 | 149.4 | 165.1 | 1651.0 | 1598.7 | 1531.9 | 270.0 | 1763.8 | 40 × 2-1/4" | Quote |
Series B Class 400, 26 to 60 inch
| Size | O | T weld neck | T blind | R | X | A | Y | W (PCD) | Bolts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26" (650 NB) | 850.9 | 88.9 | 88.9 | 711.2 | 688.8 | 660.4 | 149.4 | 781.0 | 28 × 1-3/8" | Quote |
| 28" (700 NB) | 914.4 | 95.2 | 95.2 | 762.0 | 739.6 | 711.2 | 158.8 | 838.2 | 24 × 1-1/2" | Quote |
| 30" (750 NB) | 971.5 | 101.6 | 101.6 | 819.1 | 793.8 | 762.0 | 169.9 | 895.3 | 28 × 1-1/2" | Quote |
| 32" (800 NB) | 1035.0 | 107.9 | 107.9 | 873.3 | 844.5 | 812.8 | 179.3 | 952.5 | 28 × 1-5/8" | Quote |
| 34" (850 NB) | 1085.8 | 111.3 | 111.3 | 927.1 | 898.7 | 863.6 | 187.5 | 1003.3 | 32 × 1-5/8" | Quote |
| 36" (900 NB) | 1155.7 | 119.1 | 119.1 | 980.9 | 952.5 | 914.4 | 200.2 | 1066.8 | 28 × 1-3/4" | Quote |
| 38" (950 NB) | 1206.5 | 124.0 | 124.0 | 1035.0 | 1003.3 | 965.2 | 206.2 | 1117.6 | 32 × 1-3/4" | Quote |
| 40" (1000 NB) | 1270.0 | 130.0 | 130.0 | 1092.2 | 1054.1 | 1016.0 | 215.9 | 1174.8 | 32 × 1-7/8" | Quote |
| 42" (1050 NB) | 1320.8 | 133.3 | 133.3 | 1143.0 | 1107.9 | 1066.8 | 223.8 | 1225.5 | 32 × 1-7/8" | Quote |
| 44" (1100 NB) | 1384.3 | 139.7 | 139.7 | 1200.1 | 1158.7 | 1117.6 | 233.2 | 1282.7 | 32 × 2" | Quote |
| 46" (1150 NB) | 1441.4 | 146.0 | 146.0 | 1257.3 | 1212.8 | 1168.4 | 244.3 | 1339.8 | 36 × 2" | Quote |
| 48" (1200 NB) | 1511.3 | 152.4 | 152.4 | 1308.1 | 1267.0 | 1219.2 | 257.0 | 1403.3 | 28 × 2-1/4" | Quote |
| 50" (1250 NB) | 1568.4 | 157.2 | 158.8 | 1361.9 | 1320.8 | 1270.0 | 268.2 | 1460.5 | 32 × 2-1/4" | Quote |
| 52" (1300 NB) | 1619.2 | 162.1 | 163.6 | 1412.7 | 1371.6 | 1320.8 | 276.4 | 1511.3 | 32 × 2-1/4" | Quote |
| 54" (1350 NB) | 1701.8 | 169.9 | 171.4 | 1470.2 | 1425.4 | 1371.6 | 289.1 | 1581.1 | 28 × 2-1/2" | Quote |
| 56" (1400 NB) | 1752.6 | 174.8 | 176.3 | 1527.0 | 1479.5 | 1422.4 | 298.4 | 1631.9 | 32 × 2-1/2" | Quote |
| 58" (1450 NB) | 1803.4 | 177.8 | 180.8 | 1577.8 | 1530.3 | 1473.2 | 306.3 | 1682.8 | 32 × 2-1/2" | Quote |
| 60" (1500 NB) | 1885.9 | 185.7 | 189.0 | 1635.3 | 1584.5 | 1524.0 | 319.0 | 1752.6 | 32 × 2-3/4" | Quote |
Series B Class 600, 26 to 60 inch
| Size | O | T weld neck | T blind | R | X | A | Y | W (PCD) | Bolts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26" (650 NB) | 890.0 | 111.2 | 111.2 | 727.0 | 698.0 | 660.4 | 181.0 | 806.4 | 28 × 1-5/8" | Quote |
| 28" (700 NB) | 950.0 | 115.9 | 115.9 | 784.0 | 752.0 | 711.2 | 190.0 | 863.6 | 28 × 1-3/4" | Quote |
| 30" (750 NB) | 1020.0 | 125.5 | 127.0 | 841.0 | 806.0 | 762.0 | 205.0 | 927.1 | 28 × 1-7/8" | Quote |
| 32" (800 NB) | 1085.0 | 130.2 | 134.9 | 895.0 | 860.0 | 812.8 | 216.0 | 984.2 | 28 × 2" | Quote |
| 34" (850 NB) | 1160.0 | 141.3 | 144.2 | 953.0 | 914.0 | 863.6 | 233.0 | 1054.1 | 24 × 2-1/4" | Quote |
| 36" (900 NB) | 1215.0 | 146.1 | 150.9 | 1010.0 | 968.0 | 914.4 | 243.0 | 1104.9 | 28 × 2-1/4" | Quote |
| 38" (950 NB) | 1270.0 | 152.4 | 155.0 | 1054.0 | 1022.0 | 965.2 | 254.0 | 1162.0 | 28 × 2-1/4" | Quote |
| 40" (1000 NB) | 1320.0 | 158.8 | 162.0 | 1111.0 | 1073.0 | 1016.0 | 264.0 | 1212.8 | 32 × 2-1/4" | Quote |
| 42" (1050 NB) | 1405.0 | 168.3 | 171.5 | 1168.0 | 1127.0 | 1066.8 | 279.0 | 1282.7 | 28 × 2-1/2" | Quote |
| 44" (1100 NB) | 1455.0 | 173.1 | 177.8 | 1226.0 | 1181.0 | 1117.6 | 289.0 | 1333.5 | 32 × 2-1/2" | Quote |
| 46" (1150 NB) | 1510.0 | 179.4 | 185.8 | 1276.0 | 1235.0 | 1168.4 | 300.0 | 1390.6 | 32 × 2-1/2" | Quote |
| 48" (1200 NB) | 1595.0 | 189.0 | 195.3 | 1334.0 | 1289.0 | 1219.2 | 316.0 | 1460.5 | 32 × 2-3/4" | Quote |
| 50" (1250 NB) | 1670.0 | 196.9 | 203.2 | 1384.0 | 1343.0 | 1270.2 | 329.0 | 1524.0 | 28 × 3" | Quote |
| 52" (1300 NB) | 1720.0 | 203.2 | 209.6 | 1435.0 | 1394.0 | 1320.8 | 337.0 | 1574.8 | 32 × 3" | Quote |
| 54" (1350 NB) | 1780.0 | 209.6 | 217.5 | 1492.0 | 1448.0 | 1371.6 | 349.0 | 1632.0 | 32 × 3" | Quote |
| 56" (1400 NB) | 1855.0 | 217.4 | 225.5 | 1543.0 | 1502.0 | 1422.4 | 362.0 | 1695.4 | 32 × 3-1/4" | Quote |
| 58" (1450 NB) | 1905.0 | 222.3 | 231.8 | 1600.0 | 1553.0 | 1473.2 | 370.0 | 1746.2 | 32 × 3-1/4" | Quote |
| 60" (1500 NB) | 1995.0 | 233.4 | 242.9 | 1657.0 | 1610.0 | 1524.0 | 389.0 | 1822.4 | 28 × 3-1/2" | Quote |
Series B Class 900, 26 to 48 inch
| Size | O | T weld neck | T blind | R | X | A | Y | W (PCD) | Bolts | |
|---|---|---|---|---|---|---|---|---|---|---|
| 26" (650 NB) | 1022.3 | 134.9 | 153.9 | 762.0 | 742.9 | 660.4 | 258.8 | 901.7 | 20 × 2-1/2" | Quote |
| 28" (700 NB) | 1104.9 | 147.6 | 166.6 | 819.1 | 797.1 | 711.2 | 276.4 | 971.5 | 20 × 2-3/4" | Quote |
| 30" (750 NB) | 1181.1 | 155.4 | 176.0 | 876.3 | 850.9 | 762.0 | 289.1 | 1035.0 | 20 × 3" | Quote |
| 32" (800 NB) | 1238.2 | 160.3 | 185.7 | 927.1 | 908.0 | 812.8 | 303.3 | 1092.2 | 20 × 3" | Quote |
| 34" (850 NB) | 1314.4 | 171.4 | 195.1 | 990.6 | 962.2 | 863.6 | 319.0 | 1155.7 | 20 × 3-1/4" | Quote |
| 36" (900 NB) | 1346.2 | 173.0 | 201.7 | 1028.7 | 1016.0 | 914.4 | 325.4 | 1200.1 | 24 × 3" | Quote |
| 38" (950 NB) | 1460.5 | 190.5 | 215.9 | 1098.5 | 1073.1 | 965.2 | 352.6 | 1289.0 | 20 × 3-1/2" | Quote |
| 40" (1000 NB) | 1511.3 | 196.8 | 223.8 | 1162.0 | 1127.3 | 1016.0 | 363.5 | 1339.8 | 24 × 3-1/2" | Quote |
| 42" (1050 NB) | 1562.1 | 206.2 | 231.6 | 1212.8 | 1176.3 | 1066.8 | 371.3 | 1390.6 | 24 × 3-1/2" | Quote |
| 44" (1100 NB) | 1648.0 | 214.4 | 242.8 | 1270.0 | 1234.9 | 1117.6 | 390.7 | 1463.5 | 24 × 3-3/4" | Quote |
| 46" (1150 NB) | 1733.5 | 225.6 | 255.5 | 1333.5 | 1292.4 | 1168.4 | 411.0 | 1536.7 | 24 × 4" | Quote |
| 48" (1200 NB) | 1784.3 | 233.4 | 263.7 | 1384.3 | 1343.2 | 1219.2 | 419.1 | 1587.5 | 24 × 4" | Quote |
Series A or Series B?
Series A and Series B flanges of the same size and class do not bolt together: the bolt circle, number of bolts and outside diameter differ up to 36 inch. Series B flanges are compact flanges with more, smaller bolts and a smaller outside diameter, common on compressor and pipeline work. Check the series on your datasheet or the mating equipment before ordering.
ASME B16.47 Series A dimensions · ASME B16.5 flanges up to 24 inch
Questions buyers ask
What sizes does ASME B16.47 Series B cover?
NPS 26 to 60 in Class 150, 300, 400 and 600, and NPS 26 to 48 in Class 900, in weld neck and blind flanges.
Are Series A and Series B flanges interchangeable?
No. Up to 36 inch they have different outside diameters, bolt circles and bolting, so a Series A flange will not bolt to a Series B flange. From 38 inch up in Class 400 to 900 the two series share dimensions.
Does Teshi make B16.47 slip-on or plate flanges?
B16.47 itself covers weld neck and blind flanges. We also make large-diameter slip-on, plate and ring flanges to drawing, based on B16.47 bolting, and to AWWA and IS 6392.
Is the raised face included in these thicknesses?
No. Thickness and hub length exclude the raised face, which is 1.6 mm for Class 150 and 300 and 6.4 mm for Class 400 and above.
Get a quotation from the manufacturer
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