125A JIS B2220 10K Flange Dimensions
125A (DN 125) to JIS B2220: pipe OD 139.8 mm; OD 250 mm; thickness 20 mm; raised face 182 mm; PCD 210 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)
125A JIS B2220 10K Flange Dimensions — all dimensions
JIS B2220 10K — slip-on / blind flange dimensions (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 139.8 mm | 5.50 in |
| Flange OD — D | 250 mm | 9.84 in |
| Flange — C | 20 mm | 0.787 in |
| Raised face — d1 | 182 mm | 7.17 in |
| Bolt circle — K | 210 mm | 8.27 in |
| Number of bolts | 8 | |
| Hole dia — L | 23 mm | 0.906 in |
| Bolt size | M20 |
Values are nominal, from JIS B2220 10K 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 — JIS B2220 10K Flange Dimensions
Same size in other ratings
Related for this size
5" Stud Bolt Chart for ASME B16.5 Flanges
Same size — open the dimensions page.
View online · PDFASME B16.205" ASME B16.20 Spiral Wound Gasket Dimensions
Same size — open the dimensions page.
View online · PDFASME B16.215" ASME B16.21 Non-Metallic Flat Gasket Dimensions
Same size — open the dimensions page.
View online · PDFASME B36.10M5" Pipe Schedule Chart — ASME B36.10M
Same size — open the dimensions page.
View online · PDFFAQ
125A JIS B2220 10K Flange Dimensions: common questions
What are the 125A JIS B2220 10K Flange Dimensions?
125A (DN 125) to JIS B2220: pipe OD 139.8 mm; OD 250 mm; thickness 20 mm; raised face 182 mm; PCD 210 mm.
Does Teshi Group manufacture 125A 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 125A 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 125A 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.