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DIN ISO EN

Dimensions Weld Neck Flanges Type 11 PN25 DIN EN 1092/1

Vorschweiss-Flansche Type 11 DIN EN 1092-1

Other Pressure Nominal

PN25 |
DN A B C D E F
10 90 60 40 2 17.2 28
15 95 65 45 2 21.3 32
20 105 75 58 2.3 26.9 40
25 115 85 68 2.6 33.7 46
32 140 100 78 2.6 42.4 56
40 150 110 88 2.6 48.3 64
50 165 125 102 2.9 60.3 75
65 185 145 122 2.9 76.1 90
80 200 160 138 3.2 88.9 105
100 235 190 162 3.6 114.3 134
125 270 220 188 4 139.7 162
150 300 250 218 4.5 168.3 192
200 360 310 278 6.3 219.1 244
250 425 370 335 7.1 273 298
300 485 430 395 8 323.9 352
350 555 490 450 8 355.6 398
400 620 550 505 8.8 406.4 452
450 670 600 555 8.8 457 500
500 730 660 615 10 508 558
600 845 770 720 11 610 660
700 960 875 820 14.2 711 760
800 1085 990 930 16 813 864
900 1185 1090 1030 17.5 914 968
1000 1320 1210 1140 20 1016 1070
DN A B C D E F
Vorschweiss-Flansche Type 11 DIN EN 1092-1
DN G H K M N R
10 14 2 16 35 6 4
15 14 2 16 38 6 4
20 14 2 18 40 6 4
25 14 2 18 40 6 4
32 18 2 18 42 6 6
40 18 3 18 45 7 6
50 18 3 20 48 8 6
65 18 3 22 52 10 6
80 18 3 24 58 12 8
100 22 3 24 65 12 8
125 26 3 26 68 12 8
150 26 3 28 75 12 10
200 26 3 30 80 16 10
250 30 3 32 88 18 12
300 30 4 34 92 18 12
350 33 4 38 100 20 12
400 36 4 40 110 20 12
450 36 4 46 110 20 12
500 36 4 48 125 20 12
600 39 5 48 125 20 12
700 42 5 50 129 20 12
800 48 5 53 138 22 12
900 48 5 57 148 24 12
1000 56 5 63 160 24 16
DN G H K M N R
Vorschweiss-Flansche Type 11 DIN EN 1092-1
DN No of
bolts
Dia of
Hex Bolts
Length of
Hex Bolts
Dia of
Stud Bolts
Length of
Stud Bolts
10 4 M12 50 1/2" 65
15 4 M12 50 1/2" 65
20 4 M12 55 1/2" 70
25 4 M12 55 1/2" 70
32 4 M16 60 5/8" 80
40 4 M16 60 5/8" 80
50 4 M16 65 5/8" 80
65 8 M16 65 5/8" 85
80 8 M16 70 5/8" 90
100 8 M20 75 3/4" 95
125 8 M24 85 7/8" 110
150 8 M24 90 7/8" 115
200 12 M24 90 7/8" 115
250 12 M27 100 1" 130
300 16 M27 105 1" 130
350 16 M30 115 1.1/8" 145
400 16 M33 120 1.1/4" 160
450 20 M33 135 1.1/4" 170
500 20 M33 140 1.1/4" 175
600 20 M36 140 1.3/8" 180
700 24 M39 150 1.1/2" 195
800 24 M45 160 1.3/4" 215
900 28 M45 170 1.3/4" 220
1000 28 M52 190 2" 250
DN No of
bolts
Dia of
Hex Bolts
Length of
Hex Bolts
Dia of
Stud Bolts
Length of
Stud Bolts

Indications:

  • A = Outside Diameter
  • B = Diameter of Bolt Circle
  • G = Diameter of Bolt Holes
  • C = Diameter of Raised Face
  • H = Height of Raised Face
  • E = Outside Diameter of Neck
  • K = Flange thickness
  • M = Length of Flange
  • N = Length of right end
  • F = Neck Diameter
  • R = Radius of Corners
  • D = Wall thickness
Vorschweiss Flansch

General notes:

Special notes:

Note 1: ISO 7005-1 (steel flanges) PN 20, 50, 110, 150, 260, 420 are designed to be interchangeable with ASME B16.5 and MSS SP-44 flanges - ISO 7005-1 flanges are not identical to ASME B 16.5 and MSS SP 44 flanges but are deemed to comply with the dimensions specified in the ASME B 16.5 and MSS SP 44.

ISO 7005-2 (cast iron) flanges PN 20, 50 are designed to be interchangeable with ANSI/ASME B16.1 (gray cast iron) and B 16.42 (ductile cast iron) but they are not identical. They are deemed to comply with dimensions specified in ASME B16.1 (grey cast iron) and B 16.42 (ductile cast iron).

Note 2: ISO PN 2.5, 6 do not have a corresponding ASME class and ASME Class 75, 400 and 800 do not have corresponding ISO PN designation. The use of these PN and Class flange ratings are therefore not recommended.

Measuring lengths of Stud Bolts and Hex bolts
PP
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