DN 400 EN 1092-1 PN16 Flange Dimensions
DN 400 (16") to EN 1092-1: pipe OD 406.4 mm; OD 580 mm; PCD 525 mm; holes 30 mm; bolts 16.
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)
- d1
- Raised face diameter
DN 400 EN 1092-1 PN16 Flange Dimensions — all dimensions
EN 1092-1 PN16 flange dimensions (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 406.4 mm | 16.00 in |
| Flange OD — D | 580 mm | 22.83 in |
| Bolt circle — K | 525 mm | 20.67 in |
| Hole dia — L | 30 mm | 1.18 in |
| Number of bolts | 16 | |
| Bolt size | M27 | |
| Plate flange — C1 | 38 mm | 1.50 in |
| Weld neck / blind — C2 | 32 mm | 1.26 in |
| Raised face — d1 | 490 mm | 19.29 in |
Values are nominal, from EN 1092-1 PN16 Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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DN 400 EN 1092-1 PN16 Flange Dimensions: common questions
What are the DN 400 EN 1092-1 PN16 Flange Dimensions?
DN 400 (16") to EN 1092-1: pipe OD 406.4 mm; OD 580 mm; PCD 525 mm; holes 30 mm; bolts 16.
Does Teshi Group manufacture DN 400 flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to EN 1092-1, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.
Can I download the DN 400 dimensions as a PDF?
Yes. Use “Download PDF for this size” on this page to get a single-size, print-ready PDF with the drawing and every tabulated dimension, or download the full EN 1092-1 PN16 Flange Dimensions chart.
Need DN 400 flanges?
Teshi Group manufactures them in India — send your size, rating and material and get a quote in 24–48 hours.
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