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Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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DIN 2630 PN2.5 Welding Neck/WN Flange Dimensions


Dimension and weight of DIN2630 PN2.5 Welding Neck Flange
Pipe Parameter d1 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 0.46
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 0.78
33.7 100 14 75 35 42 2.6 4 6 60 2 4 11 0.78
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 55 2.6 6 7 80 3 4 14 1.21
48.3 130 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 1.6
80 88.9 190 16 150 42 102 3.2 8 10 128 3 4 18 2.72
100 106 210 16 170 45 122 3.6 8 10 148 3 4 18 3.2
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
166.3 265 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 16 312 3 12 18 10.57
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 18.56
368 490 22 445 62 385 7.1 12 15 415 4 12 22 16.76
400 406.4 540 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
500 506 645 24 600 68 538 7.1 12 15 570 4 20 22 23.57
600 610 755 24 705 70 640 7.1 12 16 670 5 20 26 34.5
700 711 660 24 810 70 740 7.1 12 16 775 5 24 26 40
800 813 975 24 920 70 842 7.1 12 16 880 5 24 30 48.18
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 25 30 63.41
1200 1220 1375 26 1320 70 1245 7 16 16 1280 5 32 30 72.82
1400 1420 1575 26 1520 70 1445 7 16 16 1480 5 36 30 84.5
1600 1620 1790 26 1730 80 1645 8 16 20 1680 5 40 30 111.57
1800 1820 1990 26 1930 80 1845 9 16 20 1890 5 44 30 128.41
2000 2020 2190 26 2130 80 2045 10 18 22 2090 5 48 30 145
2200 2220 2405 28 2340 90 2248 10 18 25 2295 6 52 33 184.1
2400 2420 2605 28 2540 90 2448 10 18 25 2495 6 56 32 200.47
2600 2620 2805 28 2740 90 2648 10 18 25 2695 6 60 33 216
2800 2820 3030 30 2960 90 2848 10 18 25 2910 6 64 36 268.05
3000 3020 3230 30 3160 90 3050 10 18 25 3110 6 66 36 285
3200 3220 3430 30 3350 90 3250 10 20 25 3310 6 72 36 306.75
3400 3420 3630 32 3560 95 3450 10 20 28 3510 6 76 36 346.71
3600 3620 3340 32 3770 100 3652 10 20 28 3720 6 80 36 305.71
3800 3820 4045 34 3970 100 3852 10 20 28 3920 6 80
4000 4020 4245 34 4170 100 4052 10 20 28 4120 6 84

 

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