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UNI 2281 PN10 Welding Neck Flange

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UNI 2281 PN10 Welding Neck Flange Dimensions
Dimensions and Weight

Uni 2281 Pn10 Weld Neck Flange Dimensions
Designation Directions d1 a b D f h h1 m r s Hole Screw Weight In KG
Rated
Dia.		 External dia.
of the pipe		 Kilogram
15 20 21 65 14 95 14 35 6 30 4 2,5 4 M 12 0,73
21,3 22,5 32 0,73
20 25 26 75 16 105 14 38 6 38 4 2,5 4 M 12 1,03
26,9 28 40 1,03
25 30 31 85 16 115 14 38 6 42 4 2,8 4 M 12 1,24
33,7 34,5 45 1,23
32 38 39 100 16 140 18 40 6 52 6 3 4 M 16 1,82
42,4 43,5 56 1,80
40 44,5 45,5 110 16 150 18 42 7 60 6 3 4 M 16 2,10
48,3 49,5 64 2,08
50 57 58 125 18 165 18 45 8 72 6 3,5 4 M 16 2,81
60,3 61,5 75 2,78
65 76,1 77 145 18 185 18 45 10 90 6 3,5 4 M 16 3,40
80 88,9 90 160 20 200 18 50 10 105 8 3,7 8** M 16 4,20
100 108 109 180 20 220 18 52 12 125 8 3,7 8 M 16 4,90
114,3 115,5 131 4,75
125 133 134 210 22 250 18 55 12 150 8 4 8 M 16 6,70
139,7 141 156 6,45
150 159 161 240 22 285 22 55 12 175 10 5 8 M 20 8,30
168,3 170,5 184 8,00
175 193,7 195,5 270 24 315 22 60 12 210 10 5 8 M 20 10,3
200 219,1 221 295 24 340 22 62 16 235 10 5 8 M 20 11,4
250 267 269 350 26 395 22 68 16 285 12 5,5 12 M 20 15,6
273 275 292 15,2
300 323,9 326 400 26 445 22 68 16 344 12 6 12 M 20 18,0
350 355,6 357,5 460 26 505 22 68 16 385 12 6,4 16 M 20 24,5
368 370 22,5
400 406,4 408,5 515 26 565 25 72 16 440 12 7 16 M 22 30,2
419 421 27,8
450 457,2 459 565 26 615 25 72 16 478 12 7,3 20 M 22 32,3
500 508 510 620 28 670 25 75 16 542 12 7,3 20 M 22 40,4
600 609,6 611,5 725 28 780 30 80 18 642 12 7,3 20 M 27 50,0
700 711,2 715 840 30 895 30 80 18 745 12 9 24 M 27 66,4
800 812,8 817 950 32 1015 33 90 18 850 12 9 24 M 30 89,3
900 914,4 918 1050 34 1115 33 95 20 950 12 9 28 M 30 104
1000 1016 1020 1160 34 1230 36 95 20 1052 16 9 28 M 33 121
1200 1220 1224 1380 38 1455 39 115 25 1255 16 10 32 M 36 x 3 180
1400 1420 1424 1590 42 1675 42 120 25 1460 16 11 36 M 39 x 3 248
1600 1620 1624 1820 46 1915 48 130 25 1665 16 12 40 M 45 x 3 352
1800 1820 1824 2020 50 2115 48 140 30 1868 16 13 44 M 45 x 3 433
2000 2020 2024 2230 54 2325 48 150 30 2072 16 14 48 M 45 x 3 543

UNI 2281 PN10 Welding Neck Flange Industries and Applications
Widely used in the industries

  • Pumps, Valves, and vessels in manufacturing and food processing.
  • Pipe connections in industrial waterworks.
  • Heat exchangers and heating systems of all sizes.
  • Mining support.
  • Nuclear power systems.
  • Plumbing and mechanical systems.
  • Assemblies in the oil, gas, and petrochemical industries.
  • Fire protection systems.

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