25A JIS B2220 10K Flange Dimensions
25A (DN 25) to JIS B2220: pipe OD 34.0 mm; OD 125 mm; thickness 14 mm; raised face 67 mm; PCD 90 mm.
Key to dimensions
- D
- Outside diameter of flange
- A
- Pipe outside diameter (hub diameter at the weld end)
- C
- Flange thickness, excluding raised face unless stated
- d1
- Raised face diameter
- K
- Bolt circle (pitch circle) diameter
- n
- Number of bolts
- L
- Bolt hole diameter
- Bolt
- Bolt size (metric M or inch diameter)
25A JIS B2220 10K Flange Dimensions — all dimensions
JIS B2220 10K — slip-on / blind flange dimensions (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 34.0 mm | 1.34 in |
| Flange OD — D | 125 mm | 4.92 in |
| Flange — C | 14 mm | 0.551 in |
| Raised face — d1 | 67 mm | 2.64 in |
| Bolt circle — K | 90 mm | 3.54 in |
| Number of bolts | 4 | |
| Hole dia — L | 19 mm | 0.748 in |
| Bolt size | M16 |
Values are nominal, from JIS B2220 10K Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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25A JIS B2220 10K Flange Dimensions: common questions
What are the 25A JIS B2220 10K Flange Dimensions?
25A (DN 25) to JIS B2220: pipe OD 34.0 mm; OD 125 mm; thickness 14 mm; raised face 67 mm; PCD 90 mm.
Does Teshi Group manufacture 25A flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to JIS B2220, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.
Can I download the 25A 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 JIS B2220 10K Flange Dimensions chart.
Need 25A 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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