LARGE DIAMETER FLANGES SERIES B / API 605 ASME B16.47 Class 75

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. 30 1.31 1.31 2.31 26.62 26.06 27.75 28.5 36 0.75  5/8 0.31
mm 762 33.3 33.3 58.7 676.1 661.9 704.9 723.9 19.1 15.9 7.9
28 in. 32 1.31 1.31 2.44 28.62 28.06 29.75 30.5 40 0.75  5/8 0.31
mm 812.8 33.3 33.a 62 726.9 712.7 755.7 774.7 19.1 15.9 7.9
30 in. 34 1.31 1.31 2.56 30.62 30.06 31.75 32.5 44 0.75  5/8 0.31
mm 863.6 33.3 33.3 65 777.7 763.5 806.5 825.5 19.1 15.9 7.9
32 in. 36 1.38 1.44 2.75 32.62 32.06 33.75 34.5 48 0.75  5/8 0.31
mm 914 4 35.1 36.6 69.9 828.5 814.3 857.3 876.3 19.1 15.9 7.9
34 in. 38 1.38 1.5 2.88 34.62 34.06 35.75 36.5 52 0.75  5/8 0.31
mm 965.2 35.1 38.1 73.2 879.3 865.1 908.1 927.1 19.1 15.9 7.9
36 in. 40.69 1.44 1.67 3.38 36.81 36.06 38 39.06 40 0.88 ¾ 0.38
mm 1033.5 36.6 42.4 85.8 935 915.9 965.2 992.1 22.4 19.1 9.7
38 in. 42.69 1.5 1.75 3.5 38.81 38.06 40 41.06 40 0.88 3/4 0.38
mm 1084.3 38.1 44.5 88.9 985.8 966.7 1016 1042.9 22.4 19.1 9.7
40 in. 44.69 1.5 1.75 3.62 40.81 40.06 42 43.06 44 0.88 ¾ 0.38
mm 1135.1 38.1 44.5 91.9 1036.6 1017.5 1066.8 1093.7 22.4 19.1 9.7
42 in. 46.69 1.56 1.88 3.75 42.81 42.06 44 45.06 48 0.88 ¾ 0.38
mm 1185.9 39.6 47.8 95.3 1087.4 1068.3 1117.6 1144.5 22.4 19.1 9.7
44 in. 49.25 1.69 1.94 4.12 44 88 44.06 46.25 47.38 36 1  7/8 0.38
mm 1251 42.9 49.3 104.6 1140 0 1119.1 1174.8 1203.5 25.4 22.2 9.7
46 in. 51.25 1.75 2 4.25 46.88 46.06 48.25 49.38 40 1  7/8 0.38
mm 1301.8 44.5 50.8 108 1190.8 1169.9 1225.6 1254.3 25.4 22.2 9.7
48 in. 53.25 1.81 2.12 4.38 48.88 48.06 50,25 51.38 44 1  7/8 0.38
mm 1352.6 46 53.8 111.3 1241.6 1220.7 1276.4 1305.1 25.4 22.2 9.7
50 in. 55.25 1.88 2.18 4.56 50.94 50.06 52.25 53.38 44 1  7/8 0.38
mm 1403.4 47.8 55.4 115.8 1293.9 1271.5 1327.2 1355.9 25.4 22.2 9.7
52 in. 57.38 1.88 2.25 4.75 52.94 52.06 54.25 55.5 48 1  7/8 0.38
mm 1457.5 47.8 57.2 120.7 1344.7 1322.3 1378 1409.7 25.4 22.2 9.7
54 in. 59.38 1.94 2.38 4.94 55 54.06 56.25 57.5 48 1  7/8 0.38
mm 1508.3 49.3 60.5 125.5 1397 1373.1 1428.8 1460.5 25.4 22.2 9.7
56 in. 62 2 2.44 5.31 57.12 56.06 58.25 59 88 40 1.12 1 0.44
mm 1574.8 50.8 62 134.9 1450.8 1423.9 1479.6 1521 28.4 25.4 11.2
58 in. 64 2.06 2.5 5.44 59.12 58.06 60.5 61.88 44 1.12 1 0.44
mm 1625.6 52.3 63.5 138.2 1501.6 1474.7 1536.7 1571.8 28.4 25.4 11.2
60 in. 66 2.19 2.62 5.69 61.12 60.06 62.5 63.88 44 1.12 1 0.44
mm 1676.4 58.6 66.5 144.5 1552.4 1525.5 1587.5 1622.6 28.4 25.4 11.2

(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 hob nonstandard.