DN 25 EN 1092-1 PN16 Flange Dimensions
DN 25 (1") to EN 1092-1: pipe OD 33.7 mm; OD 115 mm; PCD 85 mm; holes 14 mm; bolts 4.
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 25 EN 1092-1 PN16 Flange Dimensions — all dimensions
EN 1092-1 PN16 flange dimensions (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 33.7 mm | 1.33 in |
| Flange OD — D | 115 mm | 4.53 in |
| Bolt circle — K | 85 mm | 3.35 in |
| Hole dia — L | 14 mm | 0.551 in |
| Number of bolts | 4 | |
| Bolt size | M12 | |
| Plate flange — C1 | 16 mm | 0.630 in |
| Weld neck / blind — C2 | 16 mm | 0.630 in |
| Raised face — d1 | 68 mm | 2.68 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.
Find another size or standard
Pick a product, standard and size — or just type — to see every dimension and download a watermarked PDF for that one size.
Other sizes — EN 1092-1 PN16 Flange Dimensions
Same size in other ratings
Related for this size
1" Stud Bolt Chart for ASME B16.5 Flanges
Same size — open the dimensions page.
View online · PDFASME B16.201" ASME B16.20 Spiral Wound Gasket Dimensions
Same size — open the dimensions page.
View online · PDFASME B16.211" ASME B16.21 Non-Metallic Flat Gasket Dimensions
Same size — open the dimensions page.
View online · PDFASME B36.10M1" Pipe Schedule Chart — ASME B36.10M
Same size — open the dimensions page.
View online · PDFFAQ
DN 25 EN 1092-1 PN16 Flange Dimensions: common questions
What are the DN 25 EN 1092-1 PN16 Flange Dimensions?
DN 25 (1") to EN 1092-1: pipe OD 33.7 mm; OD 115 mm; PCD 85 mm; holes 14 mm; bolts 4.
Does Teshi Group manufacture DN 25 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 25 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 25 flanges?
Teshi Group manufactures them in India — send your size, rating and material and get a quote in 24–48 hours.
Ready to build to spec?
Share your drawing, bill of materials or technical requirements with the Teshi team.