ASME B16.47 Series A/MSS SP-44 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
26 870 66.7 749 806.4 24 34.9 306.37
28 925 69.9 800 863.6 28 34.9 362.18
30 985 73.1 857 914.2 28 34.9 431.26
32 1060 79.4 914 977.9 28 41.3 537.39
34 1110 81.0 965 1028.7 32 41.3 600.01
36 1170 88.9 1022 1085.8 32 41.3 733.85
38 1240 85.8 1073 1149.4 32 41.3 799.33
40 1290 88.9 1124 1200.2 36 41.3 894.73
42 1345 95.3 1194 1257.3 36 41.3 1045.24
44 1405 100.1 1245 1314.4 40 41.3 1196.23
46 1455 101.6 1295 1365.2 40 41.3 1305.08
48 1510 106.4 1359 1422.4 44 41.3 1470.44
50 1570 109.6 1410 1479.6 44 47.6 1623.89
52 1625 114.3 1461 1536.7 44 47.6 1818.21
54 1685 119.1 1511 1593.8 44 47.6 2041.23
56 1745 122.3 1575 1651.0 48 47.6 2246.21
58 1805 127.0 1626 1708.2 48 47.6 2500.27
60 1855 130.2 1676 1759.0 52 47.6 2704.21

Standards, Dimensions & Weight ofBlind flanges

What is the use of a blind flange

Flanges specification, Standard and identification

Below you will find a short description and definition of each type, completed with an detailed image.