EN 1092-1 PN40 Flange Dimensions
This chart gives EN 1092-1 PN40 flange dimensions in millimetres for DN 10 to DN 600: outside diameter, bolt circle, bolt holes and bolting, flange thickness. EN 1092-1 PN40 is the European flange standard most often specified on export and European-design projects.
Teshi Group manufactures flanges to EN 1092-1 on request — weld neck (Type 11), slip-on (Type 12), plate (Type 01) and blind (Type 05) — alongside its ASME B16.5 range.
Key to dimensions
- A
- Pipe outside diameter (EN 10220 / ISO series 1)
- D
- Outside diameter of flange
- K
- Bolt circle (pitch circle) diameter
- L
- Bolt hole diameter
- n
- Number of bolts
- C1
- Thickness of plate flange (Type 01)
- C2
- Thickness of weld neck and blind flanges (Types 11 and 05)
EN 1092-1 PN40 Flange Dimensions — tables
EN 1092-1 PN40 flange dimensions (mm)
| DN | APipe OD | DFlange OD | KBolt circle | LHole dia | nBolts | BoltSize | C1Plate flange | C2Weld neck / blind |
|---|---|---|---|---|---|---|---|---|
| 10 | 17.2 | 90 | 60 | 14 | 4 | M12 | 14 | 14 |
| 15 | 21.3 | 95 | 65 | 14 | 4 | M12 | 14 | 14 |
| 20 | 26.9 | 105 | 75 | 14 | 4 | M12 | 14 | 14 |
| 25 | 33.7 | 115 | 85 | 14 | 4 | M12 | 16 | 16 |
| 32 | 42.4 | 140 | 100 | 18 | 4 | M16 | 18 | 16 |
| 40 | 48.3 | 150 | 110 | 18 | 4 | M16 | 18 | 16 |
| 50 | 60.3 | 165 | 125 | 18 | 4 | M16 | 20 | 20 |
| 65 | 76.1 | 185 | 145 | 18 | 8 | M16 | 22 | 22 |
| 80 | 88.9 | 200 | 160 | 18 | 8 | M16 | 24 | 24 |
| 100 | 114.3 | 235 | 190 | 22 | 8 | M20 | 26 | 24 |
| 125 | 139.7 | 270 | 220 | 26 | 8 | M24 | 28 | 26 |
| 150 | 168.3 | 300 | 250 | 26 | 8 | M24 | 30 | 28 |
| 200 | 219.1 | 375 | 320 | 30 | 12 | M27 | 36 | 34 |
| 250 | 273.0 | 450 | 385 | 33 | 12 | M30 | 42 | 38 |
| 300 | 323.9 | 515 | 450 | 33 | 16 | M30 | 48 | 42 |
| 350 | 355.6 | 580 | 510 | 36 | 16 | M33 | 54 | 46 |
| 400 | 406.4 | 660 | 585 | 39 | 16 | M36 | 60 | 50 |
| 450 | 457.0 | 685 | 610 | 39 | 20 | M36 | 66 | 57 |
| 500 | 508.0 | 755 | 670 | 42 | 20 | M39 | 72 | 57 |
| 600 | 610.0 | 890 | 795 | 48 | 20 | M45 | 84 | 72 |
Notes
- All dimensions are in millimetres.
- Flange outside diameter, bolt circle and drilling are common to all EN 1092-1 flange types of the same DN and PN, so flanges of different types mate with each other.
- Bolt sizes are metric (ISO). Bolt holes are 2–6 mm larger than the bolt, as tabulated.
- C1 applies to plate flanges (Type 01); C2 to weld neck (Type 11) and blind (Type 05) flanges. Thickness excludes the raised face.
- Up to DN 150, PN25 and PN40 flanges share the same dimensions; from DN 200 they differ.
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
Equivalent and related standards to EN 1092-1 PN40 Flange Dimensions
All equivalents| Region | Standard | Relationship |
|---|---|---|
| China | HG/T 20592 PN 40 | Chemical-industry PN flanges — EN 1092-1 (European system) dimensions |
| China | GB/T 9124.1 PN 40 | National standard steel pipe flanges, PN series — EN 1092-1 dimensions |
| International | ISO 7005-1 PN 40 | ISO steel flanges, PN series |
| Germany | DIN 2631–2638 / DIN 2501 PN 40 (withdrawn) | Former DIN flanges replaced by EN 1092-1 |
| UK | BS 4504 PN 40 (withdrawn) | Former British PN flanges replaced by EN 1092-1 |
| India | IS 6392 PN 40 | Indian PN flanges — closely related tables; check drilling |
| USA | ASME B16.5 (nearest class) | Not interchangeable — inch-based Class system |
Teshi Group manufactures flanges and fittings to all of these standards on request, including Chinese GB / HG / SH and European EN dimensions for export projects. Always confirm bolting, facing and thickness when substituting one standard for another.
Dimension finder
Pick a product, standard and size — or just type — to see every dimension and download a watermarked PDF for that one size.
EN 1092-1 PN40 Flange Dimensions — size by size
Every size has its own page with a drawing, mm and inch values and a one-size PDF.
FAQ
EN 1092-1 PN40 Flange dimensions: common questions
What are the dimensions of a DN100 PN40 flange?
A DN100 PN40 flange to EN 1092-1 has an outside diameter of 235 mm, a bolt circle of 190 mm and 8 holes of 22 mm for M20 bolts.
Is EN 1092-1 PN40 interchangeable with ASME B16.5 flanges?
No. EN 1092-1 flanges are drilled to metric bolt circles with metric bolts, while ASME B16.5 flanges use inch drilling. A PN flange will not bolt to a Class 150 or 300 flange without an adaptor or special drilling.
Does Teshi Group manufacture EN 1092-1 flanges?
Yes. Teshi Group manufactures weld neck, slip-on, plate and blind flanges to EN 1092-1 in India, in carbon steel (P245GH, P250GH, S235JR) and stainless steel (1.4301, 1.4404), with EN 10204 3.1 certificates.
Related products, data sheets and standards
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View online · PDFEN 1092-1EN 1092-1 PN10 flange dimensions
PN10 weld neck, slip-on, plate and blind flange drilling, DN10–600, in mm.
View online · PDFEN 1092-1EN 1092-1 PN16 flange dimensions
PN16 weld neck, slip-on, plate and blind flange drilling and thickness, DN10–600, in mm.
View online · PDFEN 1092-1EN 1092-1 PN25 flange dimensions
PN25 weld neck, slip-on, plate and blind flange drilling and thickness, DN10–600, in mm.
View online · PDFASME B16.5ASME B16.5 Class 150 flange dimensions
Class 150 weld neck, slip-on, blind, socket weld, threaded and lap joint flange dimensions, NPS ½–24, in mm.
View online · PDF
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