LARGE DIAMETER FLANGES SERIES B / API 605 ASME B16.47 Class 300


SERIES B FLANGES

Nominal
Size
NPS
Outside
Diameter
of
Flange
Thickness
of
Flange
Length
thru
Hub
Diameter Of Hub At Base Diameter Of Hub At Point of Welding Diameter Of Raised
Face
Diameter
of
Bolt
Circle
Number of
Bolt Holes
Diameter
of
Bolt
Holes
Diameter
of
Bolts
Fillet Radius Min
WNF BLIND
O C C Y X A R r1
26 in. 34.12 3.5 3.5 5.69 27.62 26.19 29 31.62 32 1.38 1 ¼ 0.56
mm 866.6 88.9 88.9 144.5 701.5 665.2 736.6 803.1 35.1 31.8 14.2
28 in. 36.25 3.5 3.5 5.88 29.75 28.19 31 33.75 36 1.38 1 ¼ 0.56
mm 920.8 88.9 88.9 149.4 755.7 716 787.4 857.3 35.1 31.8 14.2
30 in. 39 3.69 3.69 6.22 32 30.25 33.25 36.25 36 1.5 1 3/8 0.56
mm 990.6 93.7 93.7 158 812.8 768.4 844.6 920.8 38.1 34.9 14.2
32 in. 41.5 4.06 4.06 6.62 34 32.25 35.5 38.5 32 1.62 1 ½ 0.62
mm 1054.1 103.1 103.1 168.1 863.6 819.2 901.7 977.9 41.1 38.1 15.7
34 in. 43.62 4.06 4.06 6.81 36.12 34.25 37.5 40.62 36 1.62 1 ½ 0.62
mm 1107.9 103.1 103.1 173 917.4 870 952.5 1031.7 41.1 38.1 15.7
36 in. 46.12 4.06 4.06 7.12 38 36.25 39.75 42.88 32 1.75 1 5/8 0.62
mm 1171.4 103.1 103.1 180.8 965.2 920.8 1009.7 1089.2 44.5 41.3 15.7
38 in. 48.12 4.38 4.38 7.56 40 38.25 41.75 44.88 36 1.75 1 5/8 0.62
mm 1222.2 111.3 111.3 192 1016 971.6 1060.5 1140 44.5 41.3 15.7
40 in. 50.12 4.56 4.56 7.81 42 40.25 43.88 46.88 40 1.75 1 5/8 0.62
mm 1273 115.8 115.8 198.4 1066.8 1022.4 1114.6 1190.8 44.5 41.3 15.7
42 in. 52.5 4.69 4.69 8.06 44 42.31 46 49 36 1.88 1 ¾ 0.62
mm 1333.5 119.1 119.1 204.7 1117.6 1074.7 1168.4 1244.6 47.8 44.5 15.7
44 in. 54.5 5 5 8.44 46.19 44.31 48 51 40 1.88 1 ¾ 0.62
mm 1384.3 127 127 214.4 1173.2 1125.5 1219.2 1295.4 47.8 44.5 15.7
46 in. 57.5 5.06 5.12 8.75 48.38 46.31 50 53.75 36 2 1 7/8 0.62
mm 1460.5 128.5 130 222.3 1228.9 1176.3 1270.0′ 1365.3 50.8 47.6 15.7
48 in. 59.5 5.06 5.31 8.81 50.31 48.31 52.25 55.75 40 2 1 7/8 0.62
mm 1511.3 128.5 134.9 223.8 1277.9 1227.1 1327.2 1416.1 50.8 47.6 15.7
50 in. 61.5 5.44 5.5 9.25 52.38 50.31 54.25 57.75 44 2 1 7/8 0.62
mm 1562.1 138.2 139.7 235 1330.5 1277.9 1378 1466.9 50.8 47.6 15.7
52 in. 63.5 5.62 5.68 9.56 54.44 52.31 56.25 59.75 48 2 1 7/8 0.62
mm 1612.9 142.7 144.3 242.8 1382.8 1328.7 1428.8 1517.7 50.8 47.6 15.7
54 in. 65.88 5.38 5.88 9.44 56.5 54.31 58.25 62.12 48 2 1 7/8 0.62
mm 1673.4 136.7 149.4 239.8 1435.1 1379.5 1479.6 1577.8 50.8 47.6 15.7
56 in. 69.5 6.06 6.18 10.56 58.81 56.31 60.5 65 00 36 2.38 2 ¼ 0.69
mm 1765.3 153.9 157 268.2 1493.8 1430.3 1536.7 1651 0 60.5 57.2 17.5
58 in. 71.94 6.06 6.38 10.81 60.94 58.31 62.75 67.44 40 2.38 2 ¼ 0.69
mm 1827.3 153.9 162.1 274.6 1547.9 1481.1 1593.9 1713 60.5 57.2 17.5
60 in. 73.94 5.94 6.56 10.69 62.94 60.31 65 69.44 40 2.38 2 ¼ 0.69
mm 1878.1 150 9 166.6 271.5 1598.7 1531.9 1651 1763.8 60.5 57.2 17.5

(1) Bore diameter to be specified by the purchaser.

(2) When this flanges are require with flat face, either the full thickness or thickness with raised face removed may be furnished. Users are reminded that removing the raised face will make the length through hub nonstandard.