DN 400 IS 6392 PN 6 Flange Dimensions
DN 400 (16") to IS 6392: pipe OD 406.4 mm; OD 540 mm; thickness 28 mm; raised face 465 mm; RF height 4 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
- f
- Raised face height
- H
- Length through hub / neck length
- K
- Bolt circle (pitch circle) diameter
- n
- Number of bolts
- L
- Bolt hole diameter
- Bolt
- Bolt size (metric M or inch diameter)
DN 400 IS 6392 PN 6 Flange Dimensions — all dimensions
PN 6 (Table 5) — plate flanges for welding (slip-on plate)
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 406.4 mm | 16.00 in |
| Flange OD — D | 540 mm | 21.26 in |
| Flange — C | 28 mm | 1.10 in |
| Raised face — d1 | 465 mm | 18.31 in |
| RF height — f | 4 mm | 0.157 in |
| Bolt circle — K | 495 mm | 19.49 in |
| Number of bolts | 16 | |
| Hole dia — L | 22 mm | 0.866 in |
| Bolt size | M20 |
PN 6 (Table 4 weld-neck + Table 9 blind) — thickness and neck
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 406.4 mm | 16.00 in |
| Flange OD — D | 540 mm | 21.26 in |
| Weld neck — C | 22 mm | 0.866 in |
| WN length — H | 65 mm | 2.56 in |
| Raised face — d1 | 465 mm | 18.31 in |
| RF height — f | 4 mm | 0.157 in |
| Number of bolts | 16 | |
| Hole dia — L | 22 mm | 0.866 in |
| Bolt size | M20 | |
| Blind — C | 22 mm | 0.866 in |
Values are nominal, from IS 6392 PN 6 Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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DN 400 IS 6392 PN 6 Flange Dimensions: common questions
What are the DN 400 IS 6392 PN 6 Flange Dimensions?
DN 400 (16") to IS 6392: pipe OD 406.4 mm; OD 540 mm; thickness 28 mm; raised face 465 mm; RF height 4 mm.
Does Teshi Group manufacture DN 400 flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to IS 6392, 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 IS 6392 PN 6 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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