(550)A JIS B2220 5K Flange Dimensions
(550)A (DN (550)) to JIS B2220: pipe OD 558.8 mm; OD 720 mm; thickness 26 mm; raised face 630 mm; PCD 665 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)
(550)A JIS B2220 5K Flange Dimensions — all dimensions
JIS B2220 5K — slip-on / blind flange dimensions (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 558.8 mm | 22.00 in |
| Flange OD — D | 720 mm | 28.35 in |
| Flange — C | 26 mm | 1.02 in |
| Raised face — d1 | 630 mm | 24.80 in |
| Bolt circle — K | 665 mm | 26.18 in |
| Number of bolts | 20 | |
| Hole dia — L | 27 mm | 1.06 in |
| Bolt size | M24 |
Values are nominal, from JIS B2220 5K Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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FAQ
(550)A JIS B2220 5K Flange Dimensions: common questions
What are the (550)A JIS B2220 5K Flange Dimensions?
(550)A (DN (550)) to JIS B2220: pipe OD 558.8 mm; OD 720 mm; thickness 26 mm; raised face 630 mm; PCD 665 mm.
Does Teshi Group manufacture (550)A 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 (550)A 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 5K Flange Dimensions chart.
Need (550)A 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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