ASME B16.47 Series B/API 605 Class 150 WN

Norminal Pipe Size O.D.of Flange, O Min.Thick-ness of WN Flange, tf Lenth Through Hub, Y Diam. of Hub, X Hub Diam. Top, A Raised Fase Diam., R Bore (XS) Diam of Bolt Circle No.of Bolt Holes Diam.of Bolt Hole Min.Fillet Radius, r1 Approxi-mate Weight kgs
26 785 39.8 87 684 661.9 711 636.5 744.5 36 22.2 10 62.61
28 835 43.0 94 735 712.7 762 687.3 795.3 40 22.2 10 71.98
30 885 43.0 98 787 763.5 813 738.1 846.1 44 22.2 10 78.00
32 940 44.6 106 840 814.3 864 788.9 900.1 48 22.2 10 90.31
34 1005 47.7 109 892 865.1 921 839.7 957.3 40 25.4 10 109.16
36 1055 50.9 116 945 915.9 972 890.5 1009.6 44 25.4 10 122.69
38 1125 52.5 122 997 968.2 1022 942.8 1070.0 40 28.6 10 146.24
40 1175 54.1 127 1049 1019.0 1080 993.6 1120.8 44 28.6 10 158.37
42 1225 57.3 132 1102 1069.8 1130 1044.4 1171.6 48 28.6 11 174.09
44 1275 58.9 135 1153 1120.6 1181 1095.2 1222.4 52 28.6 11 185.45
46 1340 60.4 143 1205 1171.4 1235 1146.0 1248.3 40 31.8 11 217.52
48 1390 63.6 148 1257 1222.2 1289 1196.8 1335.1 44 31.8 11 235.84
50 1445 66.8 152 1308 1273.0 1340 1247.6 1385.9 4 31.8 11 277.60
52 1495 68.4 156 1360 1323.8 1391 1298.4 1436.7 52 31.8 11 274.80
54 1550 70.0 160 1413 1374.6 1441 1349.2 1492.2 56 31.8 11 298.15
56 1600 71.6 165 1465 1425.4 1492 1400.0 1543.0 60 31.8 14 315.74
58 1675 73.1 173 1516 1476.2 1543 1450.8 1611.3 48 34.9 14 375.36
60 1725 74.7 178 1570 1527.0 1600 1501.6 1662.1 52 34.9 14 397.93


Standards, Dimensions & Weight of WN flange

The welding neck flange is the best designed butt-welded flange of those currently available becuase of its inherent structural value.

Most common flange types

Regardless of custom sizing or specifications, the fundamental design of most flanges falls under six common styles created to close, connect, cover, or support pipes and pipe systems.



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