LARGE DIAMETER FLANGES SERIES A / MSS SP44 ASME B16.47 Class 300

SERIES A

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. 38.25 3.12 3.31 7.25 28.38 26 29.5 34.5 28 1.75 1 5/8 0.38
mm 971.6 79.2 84.1 184.2 720.9 660.4 749.3 876.3 44.5 41.4 9.7
28 in. 40.75 3 38 3.56 7.75 30.5 28 31.5 37 28 1.75 1 5/8 0.44
mm 1035.1 85.9 90.4 196.9 774.7 711.2 800.1 939.8 44.5 41.4 11.2
30 in. 43 3.62 3.75 8.25 32.56 30 33.75 39.25 28 1.88 1 ¾ 0.44
mm 1092.2 91.9 95.3 209.6 827 762 857.3 997 47.8 44.5 11.2
32 in. 45.25 3.88 3.94 8.75 34.69 32 36 41.5 28 2 1 7/8 0.44
mm 1149.4 98.6 100.1 222.3 881.1 812.8 914.4 1054.1 50.8 47.8 11.2
34 in. 47.5 4 4.12 9.12 36.88 34 38 43.5 28 2 1 7/8 0.5
mm 1206.5 101.6 104.6 231.6 936.8 863.6 965.2 1104.9 50.8 47.8 12.7
36 in. 50 4.12 4.38 9.5 39 36 40.25 46 32 2.12 2 0.5
mm 1270 104.6 111.3 241.3 990.6 914.4 1022.4 1168.4 53.8 50.8 12.7
38 in. 46 4.25 4.25 7.12 39.12 38 40.5 43 32 1.62 1 ½ 0.5
mm 1168.4 108 108 180.8 993.6 965.2 1028.7 1092.2 41.1 38.1 12.7
40 in. 48.75 4 50 4.5 7.62 41.25 40 42.75 45.5 32 1.75 1 5/8 0.5
mm 1238.3 114.3 114.3 193.5 1054.6 1016 1085.9 1155.7 44.5 41.4 12.7
42 in. 50.75 4.69 4.69 7.88 43.25 42 44.75 47.5 32 1.75 1 5/8 0.5
mm 1289.1 119.1 119.1 200.2 1098.6 1066.8 1136.7 1206.5 44.5 41.4 12.7
44 in. 53.25 4 88 4.88 812 45.25 44 47 49.75 32 1.88 1 ¾ 0.5
mm 1352.6 124 0 124 206 2 1149.4 1117.6 1193.8 1263.7 47.8 44.5 12.7
46 in. 55.75 5.06 5.06 8.5 47.38 46 49 52 28 2 1 7/8 0.5
mm 1416.1 128.5 128.5 215.9 1203.5 1168.4 1244.6 1320.8 50.8 47.8 12.7
48 in. 57.75 5.25 5.25 8.81 49.38 48 51.25 54 32 2 1 7/8 0.5
mm 1466.9 133.4 133.4 223.8 1254.3 1219.2 1301.8 1371.6 50.8 47.8 12.7
50 in. 60.25 5.5 5.5 9.12 51.38 50 53.5 56.25 32 2.12 2 0.5
mm 1530.4 139.7 139.7 231.6 1305.1 1270 1358.9 1428.8 53.8 50.8 12.7
52 in. 62.25 5.69 5.69 9 38 53.38 52 55.5 58.25 32 2.12 2 0.5
mm 1581.2 144.5 144.5 238 3 1355.9 1320.8 1409.7 1479.6 53.8 50.8 12.7
54 in. 65.25 6 6 9.94 55.5 54 57.75 61 28 2.38 2 ¼ 0.5
mm 1657.4 152.4 152.4 252.5 1409.7 1371.6 1466.9 1549.4 60.5 57.2 12.7
56 in. 67.25 6.06 6.06 10.25 57.62 56 59.75 63 28 2.38 2 ¼ 0.5
mm 1708.2 153.9 153.9 260.4 1463.5 1422.4 1517.7 1600.2 60.5 57.2 12.7
58 in. 69.25 6.25 6.25 10.5 59.62 58 62 65 32 2.38 2 ¼ 0.5
mm 1759 158.8 158.8 266.7 1514.3 1473.2 1574.8 1651 60.5 57.2 12.7
60 in. 71.25 6.44 6.44 10.75 61.62 60 64 67 32 2.38 2 ¼ 0.5
mm 1809.8 163.6 163.6 273.1 1565.1 1524 1625.6 1701.8 60.5 57.2 12.7

(1) Bore diameter to be specified by purchaser.

(2) When this flanges are required 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.