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

Norminal Pipe Size O.D.of Flange, O Min.Thick-ness of BL Flange, tf Raised Fase Diam., R Diam of Bolt Circle No.of Bolt Holes Diam.of Bolt Hole Approxi-mate Weight kgs
26 785 43.0 711 744.5 36 22.2 165.01
28 835 46.2 762 795.3 40 22.2 200.28
30 885 49.3 813 846.1 44 22.2 239.79
32 940 52.5 864 900.1 48 22.2 287.75
34 1005 55.7 921 957.3 40 25.4 348.71
36 1055 57.3 972 1009.6 44 25.4 395.12
38 1125 62.0 1022 1070.0 40 28.6 484.55
40 1175 65.2 1080 1120.8 44 28.6 555.34
42 1225 66.8 1130 1171.6 48 28.6 618.09
44 1275 70.0 1181 1222.4 52 28.6 700.98
46 1340 73.1 1235 1248.3 40 31.8 810.50
48 1390 76.3 1289 1335.1 44 31.8 909.20
50 1445 79.5 1340 1385.9 4 31.8 1044.39
52 1495 82.7 1391 1436.7 52 31.8 1137.57
54 1550 85.8 1441 1492.2 56 31.8 1267.59
56 1600 89.0 1492 1543.0 60 31.8 1400.03
58 1675 91.9 1543 1611.3 48 34.9 1587.04
60 1725 95.4 1600 1662.1 52 34.9 1745.76


Standards, Dimensions & Weight of Blind flanges

What is the use of a blind flange

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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