DIN 2565 PN 6 (in mm)
Nominal Pipe Size Flange Dia Flange I.D Thk of Flange Dia of Bolt Cirlce Length Through Hub Dia of Hub Dia of R/F Thk of R/F No. of Dia of Bolt Holes  
DN D D5 B K H1 D3 D4 F holes D2 KG
6 65 11.7 10 40 18 18 25 2 4 11.5 0.19
8 70 15.0 10 45 18 22 30 2 4 11.5 0.23
10 75 17.70 12 50 20 25 35 2 4 11.5 0.32
15 80 22.00 12 55 20 30 40 2 4 11.5 0.37
20 90 27.60 14 65 24 40 50 2 4 11.5 0.58
25 100 34.40 14 75 24 50 60 2 4 11.5 0.73
32 120 43.10 14 90 26 60 70 2 4 14.0 1.05
40 130 49.00 14 100 26 70 80 3 4 14.0 1.20
50 140 61.10 14 110 28 80 90 3 4 14.0 1.54
65 160 77.10 14 130 32 100 110 3 4 14.0 1.87
80 190 90.30 16 150 34 110 128 3 4 18.0 2.78
100 210 115.90 16 170 38 130 148 3 4 18.0 3.07
150 240 170.50 18 200 40 160 178 3 8 18.0 4.33
200 285 221.80 18 225 44 185 202 3 8 18.0 4.81
DIN 2565, PN 6, German flanges, no. of holes, Mumbai
DIN 2566 PN 16 (in mm)
Nominal Pipe Size Flange Dia Flange I.D Thk of Flange Dia of Bolt Cirlce Length Through Hub Dia of Hub Dia of R/F Thk of R/F No. of Dia of Bolt Holes  
DN D D5 B K H1 D3 D4 F holes D2 KG
6 75 11.7 12 50 18 20 32 2 4 11 0.33
8 80 15.0 12 55 18 25 38 2 4 11 0.39
10 90 17.70 14 60 20 30 40 2 4 14 0.56
15 95 22.00 14 65 20 35 45 2 4 14 0.62
20 105 27.60 16 75 24 45 58 2 4 14 0.92
25 115 34.40 16 85 24 52 68 2 4 14 1.10
32 140 43.10 16 100 26 60 78 2 4 18 1.59
40 150 49.00 16 110 26 70 88 3 4 18 1.77
50 165 61.10 18 125 28 85 102 3 4 18 2.41
65 185 77.10 18 145 32 105 122 3 4 18 3.13
80 200 90.30 20 160 34 118 138 3 4 18 3.95
100 220 115.90 20 180 38 140 158 3 8 18 4.38
125 250 143.80 22 210 40 168 188 3 8 18 5.99
150 285 170.50 22 240 44 196 212 3 8 22 7.42