BLRF

material-composition
NOMINAL PIPE SIZE OUTSIDE DIA.(MM) THICKNESS MIN (MM) DIA. OF RAISED FACE (MM) NUMBER OF BOLT HOLES DIA. OF HOLES(MM) DIA. OF BOLT CIRCLE (MM) HEIGHT  OF RAISED FACE(MM) APPROX WEIGHT(KG)
  D t G   h C f  
1/2" 120.6 22.3 35.0 4 22.3 82.5   1.8
3/4" 130.1 25.4 42.9 4 22.3 88.9   2.5
1" 149.3 28.4 50.8 4 25.4 101.6   3.6
1.1/4" 158.7 28.4 63.5 4 25.4 111.1   4.2
1.1/2" 177.8 31.7 73.1 4 28.4 123.8   5.8
2" 215.9 38.1 91.9 8 25.4 165.1   11
2.1/2" 244.3 41.1 104.6 8 28.4 190.5   14
3" 266.7 47.7 127.0 8 31.7 203.2   20
4" 311.1 53.8 157.2 8 35.0 241.3   30
5" 374.6 73.1 185.6 8 41.1 292.1   59
6" 393.7 82.5 215.9 12 38.1 317.5   72
8" 482.6 91.9 269.7 12 44.4 393.7   122
10" 584.2 107.9 323.8 12 50.8 482.6   210
12" 673.1 123.9 381.0 16 53.8 571.5   316
14′ 749.3 133.0 412.7 16 60.4 635.0   420
16" 825.5 146.0 469.9 16 66.5 704.8   560
18" 914.4 162.0 533.4 16 73.1 774.7   760
20" 984.2 177.8 584.2 16 79.2 831.8   965
24" 1168.4 203.2 692.1 16 91.9 990.6   1558