Dimension and weight of DIN2631 PN6 Welding Neck Flange
Pipe Parameter Flange Dimension Neck Size Hub Size Screw Approx. Flange Weight
DN ISO DIN D b k h1 d3 s r h2 d4 f No. of Holes d2 KG/PCS
10 – 14 75 12 50 28 22 1.8 4 6 35 2 4 11 0.34
17.2 – 75 12 50 28 26 1.8 4 6 35 2 4 11 0.34
15 – 20 80 12 55 30 28 2 4 6 40 2 4 11 0.39
21.3 – 80 12 55 30 30 2 4 6 40 2 4 11 0.4
20 – 25 90 14 65 32 35 2.3 4 6 50 2 4 11 0.6
26.9 – 90 14 65 32 38 2.3 4 6 50 2 4 11 0.6
25 – 30 100 14 75 35 40 2.6 4 6 60 2 4 11 0.76
33.7 – 100 14 75 35 42 2.6 4 6 60 2 4 11 0.75
32 – 38 120 14 90 35 50 2.6 6 6 70 2 4 14 1.07
42.4 – 120 14 90 35 55 2.6 6 6 70 2 4 14 1.06
40 – 44.5 130 14 100 38 58 2.6 6 7 80 3 4 14 1.21
46.3 – 130 14 100 38 62 2.6 6 7 80 3 4 14 1.2
50 – 57 140 14 110 38 70 2.9 6 8 90 3 4 14 1.37
60.3 – 140 14 110 38 74 2.9 6 8 90 3 4 14 1.36
65 76.1 – 160 14 130 38 88 2.9 6 9 110 3 4 14 1.69
80 88.9 – 190 16 150 42 102 3.2 8 10 128 3 4 18 2.72
100 – 108 210 16 170 45 122 3.6 8 10 148 3 4 18 3.29
114.3 – 210 16 170 45 130 3.6 8 10 148 3 4 18 3.22
125 – 133 240 18 200 48 148 4 8 10 178 3 8 18 4.58
139.7 – 240 18 200 48 155 4 8 10 178 3 8 18 4.42
150 – 159 265 18 225 48 172 4.5 10 12 202 3 8 18 5.26
158.3 – 265 18 225 48 184 4.5 10 12 202 3 8 18 5.04
200 219.1 – 320 20 280 55 236 5.9 10 15 258 3 8 18 7.95
250 – 267 375 22 335 60 282 6.3 12 15 312 3 12 18 11.16
273 – 375 22 335 60 290 6.3 12 15 312 3 12 18 10.87
300 323.9 – 440 22 395 62 342 7.1 12 15 365 4 12 22 14.26
350 355.6 – 490 22 445 62 385 7.1 12 15 415 4 12 22 18.54
– 368 490 22 445 62 385 7.1 12 15 415 4 12 22 16.78
400 406.6 – 540 22 495 65 438 7.1 12 15 465 4 16 22 21.25
– 419 540 22 495 65 438 7.1 12 15 465 4 16 22 19.1
500 508 – 645 24 600 68 538 7.1 12 15 570 4 20 22 28.67
600 610 – 755 24 705 70 640 7.1 12 16 670 5 20 26 34.8
700 711 – 860 24 810 70 740 7.1 12 16 775 5 24 26 40.94
800 813 – 975 24 920 70 842 7.1 12 16 880 5 24 30 49.19
900 914 – 1075 26 1020 70 942 7.1 12 16 980 5 24 30 58.1
1000 1016 – 1175 26 1120 70 1045 7.1 16 16 1080 5 28 30 63.48
1200 1220 – 1405 28 1340 90 1248 8 16 20 1295 5 32 33 100.17
1400 1420 – 1630 32 1560 90 1452 8 16 20 1510 5 36 36 142.78
1600 1620 – 1830 34 1760 90 1655 9 16 20 1710 5 40 36 174.36
1800 1820 – 2045 36 1970 100 1855 10 16 20 1920 5 44 39 226.98
2000 2020 – 2265 38 2180 110 2058 11 16 25 2125 5 48 42 292.12
2200 2220 – 2475 42 2390 115 2260 12 18 25 2335 6 52 42 366.33
2400 2420 – 2685 44 2600 125 2462 13 18 25 2545 6 56 42 448.52
2600 2620 – 2905 46 2810 130 2665 14 18 25 2750 6 60 48 540.16
2800 2820 – 3115 48 3020 135 2865 15 18 30 2960 6 64 48 630.03
3000 3020 – 3315 50 3220 140 3068 16 18 30 3160 6 68 48 716.33
3200 3220 – 3525 54 3430 150 3272 16 20 30 3370 6 72 48 854.42
3400 3420 – 3735 46 3640 160 3475 18 20 35 3580 6 76 48 887.81
3600 3620 – 3970 60 3860 165 3678 18 20 35 3790 6 80 56 1202.43