DN 300 IS 6392 PN 40 Flange Dimensions
DN 300 (12") to IS 6392: pipe OD 323.9 mm; OD 515 mm; thickness 50 mm; raised face 410 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
- N
- Neck / hub diameter at base
- 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 300 IS 6392 PN 40 Flange Dimensions — all dimensions
PN 40 (Table 28) — plate flanges for welding (slip-on plate)
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 323.9 mm | 12.75 in |
| Flange OD — D | 515 mm | 20.28 in |
| Flange — C | 50 mm | 1.97 in |
| Raised face — d1 | 410 mm | 16.14 in |
| RF height — f | 4 mm | 0.157 in |
| Bolt circle — K | 450 mm | 17.72 in |
| Number of bolts | 16 | |
| Hole dia — L | 33 mm | 1.30 in |
| Bolt size | M30 |
PN 40 (Table 27 weld-neck + Table 31 blind) — thickness, neck and drilling
| Dimension | Value | Equivalent |
|---|---|---|
| Pipe OD — A | 323.9 mm | 12.75 in |
| Flange OD — D | 515 mm | 20.28 in |
| Weld neck — C | 42 mm | 1.65 in |
| WN length — H | 115 mm | 4.53 in |
| Raised face — d1 | 410 mm | 16.14 in |
| RF height — f | 4 mm | 0.157 in |
| Bolt circle — K | 450 mm | 17.72 in |
| Number of bolts | 16 | |
| Hole dia — L | 33 mm | 1.30 in |
| Bolt size | M30 | |
| Blind — C | 42 mm | 1.65 in |
Values are nominal, from IS 6392 PN 40 Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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DN 300 IS 6392 PN 40 Flange Dimensions: common questions
What are the DN 300 IS 6392 PN 40 Flange Dimensions?
DN 300 (12") to IS 6392: pipe OD 323.9 mm; OD 515 mm; thickness 50 mm; raised face 410 mm; RF height 4 mm.
Does Teshi Group manufacture DN 300 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 300 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 40 Flange Dimensions chart.
Need DN 300 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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