Pipe Components 2011 - Van Leeuwen Buizen

Technical information flanges EN 1092
Table of dimensions for flanges
Flanges as per EN 1092-1, PN 16 (dimensions in millimeters)
DN Outside
diam.
Diam.
of
bolt
circle
Diam.
of
bolt
hole
Number
of
bolts
Outside
diam.
of
neck
Bore
diameters
Flange thickness Length Neck diameters
D K L A B1 B2 B3 C1 C2 C3 C4 H1 H2 H3 H4 H5 N1 N2 N3 R1 d1
Flange Type
01, 02, 04, 05, 11, 12, 13, 21
11,
21a,
34d,
35-37
01,
12,
32
02 04
01,
02,
04
11,
12,
13
21 05
12,
13
11,
34c
11,
34c
35 36 37
10 90 60 14 4 17.2 18.0 21 31 14 16 16 16 22 35 6 35 35 7 28 30 28 4 40
15 95 65 14 4 21.3 22.0 25 35 14 16 16 16 22 38 6 38 38 7 32 35 32 4 45
20 105 75 14 4 26.9 27.5 31 42 16 18 18 18 26 40 6 40 40 8 40 45 40 4 58
25 115 85 14 4 33.7 34.5 38 49 16 18 18 18 28 40 6 40 40 10 46 52 50 4 68
32 140 100 18 4 42.4 43.5 47 59 18 18 18 18 30 42 6 42 42 12 56 60 60 6 78
40 150 110 18 4 48.3 49.5 53 67 18 18 18 18 32 45 7 45 45 15 64 70 70 6 88
50 165 125 18 4 60.3 61.5 65 77 20 18 18 18 28 45 8 45 45 20 74 84 84 6 102
65 185 145 18 8b 76.1 77.5 81 96 20 18 18 18 32 45 10 45 45 20 92 104 104 6 122
80 200 160 18 8 88.9 90.5 94 108 20 20 20 20 34 50 10 50 50 25 105 118 120 6 138
100 220 180 18 8 114.3 116.0 120 134 22 20 20 20 40 52 12 52 52 25 131 140 140 8 158
125 250 210 18 8 139.7 141.5 145 162 22 22 22 22 44 55 12 55 55 25 156 168 170 8 188
150 285 240 22 8 168.3 170.5 174 188 24 22 22 22 44 55 12 55 55 25 184 195 190 10 212
200 340 295 22 12 219.1 221.5 226 240 26 24 24 24 44 62 16 62 62 30 235 246 246 10 268
250 405 355 26 12 273.0 276.5 281 294 29 26 26 26 46 70 16 70 68 - 292 298 296 12 320
300 460 410 26 12 232.9 327.5 333 348 32 28 28 28 46 78 16 78 68 - 344 350 350 12 378
350 520 470 26 16 355.6 359.5 365 400 35 30 30 30 57 82 16 82 68 - 390 400 410 12 438
400 580 525 30 16 406.4 411.0 416 454 38 32 32 32 63 85 16 85 72 - 445 456 458 12 490
450 640 585 30 20 457.0 462.0 467 500 42 34 40 40 68 83 16 87 - - 490 502 516 12 550
500 715 650 33 20 508.0 513.5 519 556 46 36 44 44 73 84 16 90 - - 548 559 576 12 610
a For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter
c To be specified by the purchaser
d Use is limited up to DN 600
For flanges up to and including outside diameter 48.3 mm PN 10, PN 16, PN 25 and PN 40 are equal.
38 No part of this publication may be multiplied or copied without previous written permission of Van Leeuwen Pipe and Tube
11,
34c
12,
13
21
Corner
radii
11, 12,
13, 21,
34
Flange
facing
all