Technical information / Connection standards / EN 1092-1 · Type 11
End connection standard
EN 1092-1 · TYPE 11
Weld neck flange dimensions
The CSV uses semicolons as separators. The link carries the selected PN, edition and DN.
| DN | d1pipe Ø | D | k | n × bolt | d2 | b | h1 | d3EN | sEN | h2 | r | d4 | f | kgEN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN15 | 21.3 | 95 | 65 | 4 × M12 | 14 | 16 | 38 | 32 | 2 | 6 | 4 | 45 | 2 | 0.768 |
| DN20 | 26.9 | 105 | 75 | 4 × M12 | 14 | 18 | 40 | 40 | 2.3 | 6 | 4 | 58 | 2 | 1.09 |
| DN25 | 33.7 | 115 | 85 | 4 × M12 | 14 | 18 | 40 | 46 | 2.6 | 6 | 4 | 68 | 2 | 1.3 |
| DN32 | 42.4 | 140 | 100 | 4 × M16 | 18 | 18 | 42 | 56 | 2.6 | 6 | 6 | 78 | 2 | 1.91 |
| DN40 | 48.3 | 150 | 110 | 4 × M16 | 18 | 18 | 45 | 64 | 2.6 | 7 | 6 | 88 | 3 | 2.15 |
| DN50 | 60.3 | 165 | 125 | 4 × M16 | 18 | 18 | 45 | 74 | 2.9 | 8 | 6 | 102 | 3 | 2.53 |
| DN65 | 76.1 | 185 | 145 | 8 × M16 | 18 | 18 | 45 | 92 | 2.9 | 10 | 6 | 122 | 3 | 3.03 |
| DN80 | 88.9 | 200 | 160 | 8 × M16 | 18 | 20 | 50 | 105 | 3.2 | 10 | 6 | 138 | 3 | 3.92 |
| DN100 | 114.3 | 220 | 180 | 8 × M16 | 18 | 20 | 52 | 131 | 3.6 | 12 | 8 | 158 | 3 | 4.62 |
| DN125 | 139.7 | 250 | 210 | 8 × M16 | 18 | 22 | 55 | 156 | 4 | 12 | 8 | 188 | 3 | 6.3 |
| DN150 | 168.3 | 285 | 240 | 8 × M20 | 22 | 22 | 55 | 184 | 4.5 | 12 | 10 | 212 | 3 | 7.81 |
| DN200 | 219.1 | 340 | 295 | 12 × M20 | 22 | 24 | 62 | 235 | 6.3 | 16 | 10 | 268 | 3 | 11.5 |
| DN250 | 273 | 405 | 355 | 12 × M24 | 26 | 26 | 70 | 292 | 6.3 | 16 | 12 | 320 | 3 | 16.7 |
| DN300 | 323.9 | 460 | 410 | 12 × M24 | 26 | 28 | 78 | 344 | 7.1 | 16 | 12 | 378 | 4 | 22.1 |
| DN350 | 355.6 | 520 | 470 | 16 × M24 | 26 | 30 | 82 | 390 | 8 | 16 | 12 | 438 | 4 | 32.8 |
| DN400 | 406.4 | 580 | 525 | 16 × M27 | 30 | 32 | 85 | 445 | 8 | 16 | 12 | 490 | 4 | 41.1 |
| DN450 | 457 | 640 | 585 | 20 × M27 | 30 | 34 | 83 | 490 | 8.8 | 16 | 12 | 550 | 4 | 48.5 |
| DN500 | 508 | 715 | 650 | 20 × M30 | 33 | 36 | 84 | 548 | 8.8 | 16 | 12 | 610 | 4 | 63.4 |
| DN600 | 610 | 840 | 770 | 20 × M33 | 36 | 40 | 88 | 670 | 11 | 18 | 12 | 725 | 5 | 94 |
| DN700 | 711 | 910 | 840 | 24 × M33 | 36 | 40 | 104 | 755 | 11 | 18 | 12 | 795 | 5 | 96.5 |
| DN800 | 813 | 1025 | 950 | 24 × M36 | 39 | 41 | 108 | 855 | 12.5 | 20 | 12 | 900 | 5 | 122 |
| DN900 | 914 | 1125 | 1050 | 28 × M36 | 39 | 48 | 118 | 955 | 12.5 | 20 | 12 | 1000 | 5 | 155 |
| DN1000 | 1016 | 1255 | 1170 | 28 × M39 | 42 | 59 | 137 | 1058 | 12.5 | 22 | 16 | 1115 | 5 | 233 |
| DN1100 | — | 1355 | 1270 | 32 × M45 | 43 | 68 | 150 | — | — | 22 | 16 | 1218 | 5 | — |
| DN1200 | 1219 | 1485 | 1390 | 32 × M45 | 48 | 78 | 160 | 1262 | 14.2 | 30 | 16 | 1330 | 5 | 390 |
| DN1300 | — | 1585 | 1490 | 36 × M45 | 48 | 81 | 170 | — | — | 30 | 16 | 1438 | 5 | — |
| DN1400 | 1422 | 1685 | 1590 | 36 × M45 | 48 | 84 | 177 | 1465 | 16 | 30 | 16 | 1530 | 5 | 495 |
| DN1500 | — | 1820 | 1710 | 40 × M52 | 56 | 92 | 190 | — | — | 30 | 16 | 1640 | 5 | — |
| DN1600 | 1626 | 1930 | 1820 | 40 × M52 | 56 | 102 | 204 | 1668 | 17.5 | 35 | 16 | 1750 | 5 | 760 |
| DN1800 | 1829 | 2130 | 2020 | 44 × M52 | 56 | 110 | 218 | 1870 | 20 | 35 | 16 | 1950 | 5 | 929 |
| DN2000 | 2032 | 2345 | 2230 | 48 × M56 | 62 | 124 | 238 | 2072 | 22 | 40 | 16 | 2150 | 5 | 1185 |
Notes
- This table has been compiled by Emsal from the relevant standards. For the full text of the standard, refer to your national standards body.
- PN64: our source table uses the DIN designation; in EN 1092-1 this class is PN63.
- The neck dimensions (d3, s) of DIN 2631–2636 flanges and, in large sizes, the pipe outside diameter differ from EN; select the DIN edition to see them. Connection dimensions are the same in both editions.
- DN1100, DN1300 and DN1500 exist only in DIN.
- Accuracy and currency are not guaranteed; use the current edition of the standard for design and purchasing decisions. How the library is compiled →
Dimension letters
| D | Flange outside diameter | d1 | Pipe outside diameter (weld bevel) |
| k | Bolt circle diameter | d3 | Neck diameter at base |
| b | Flange thickness | s | Wall thickness at weld bevel |
| h1 | Overall length | h2 | Straight length at weld end |
| d4 | Raised face diameter | f | Raised face height |
| d2 | Bolt hole diameter | r | Neck base radius |
Joint type and P&ID symbol
The neck of a weld neck flange is butt-welded to the pipe. The weld is full penetration and can be radiographed.
flangepipegasketweldbolt, nut
- Bevel the neck and the pipe end at the weld bevel angle; the bores (schedule) must match.
- Make a full-penetration butt weld; radiograph if required.
- Fit the gasket and tighten the bolts in a cross pattern.
The tapered neck spreads stress into the pipe; it is the standard choice for high pressure, high temperature and vibration. The smooth bore does not disturb the flow.
P&ID: Flanged jointTwo short heavy lines perpendicular to the pipeline; the flange type is not shown on the diagram but given in the line list. Symbol library →
Not to scale; proportions are indicative.
