DN 450 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40
DN 450 (18") to IS 9523: OD 615 mm; PCD 565 mm; bolts 20; holes 28 mm; raised face 530 mm.
Key to dimensions
- D
- Outside diameter of flange
- B
- Bore (inside diameter) of plate flange
- C
- Flange thickness — plate or blind, raised face (RF) or flat face (FF)
- K
- Bolt circle (pitch circle) diameter
- n
- Number of bolt holes
- L
- Bolt hole diameter
- d1
- Raised face diameter
- f
- Raised face height
DN 450 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40 — all dimensions
IS 9523 PN 10 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 615 mm | 24.21 in |
| Bolt circle — K | 565 mm | 22.24 in |
| Number of bolts | 20 | |
| Hole dia — L | 28 mm | 1.10 in |
| Raised face — d1 | 530 mm | 20.87 in |
| RF height — f | 4 mm | 0.157 in |
| Bore — B | 460.2 mm | 18.12 in |
| Plate, RF — C | 25 mm | 0.984 in |
| Plate, FF — C | 21 mm | 0.827 in |
| Blind, RF — C | 25 mm | 0.984 in |
| Blind, FF — C | 21 mm | 0.827 in |
IS 9523 PN 16 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 640 mm | 25.20 in |
| Bolt circle — K | 585 mm | 23.03 in |
| Number of bolts | 20 | |
| Hole dia — L | 31 mm | 1.22 in |
| Raised face — d1 | 548 mm | 21.57 in |
| RF height — f | 4 mm | 0.157 in |
| Bore — B | 460.2 mm | 18.12 in |
| Plate, RF — C | 30 mm | 1.18 in |
| Plate, FF — C | 26 mm | 1.02 in |
| Blind, RF — C | 30 mm | 1.18 in |
| Blind, FF — C | 26 mm | 1.02 in |
IS 9523 PN 25 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 670 mm | 26.38 in |
| Bolt circle — K | 600 mm | 23.62 in |
| Number of bolts | 20 | |
| Hole dia — L | 37 mm | 1.46 in |
| Raised face — d1 | 548 mm | 21.57 in |
| RF height — f | 4 mm | 0.157 in |
| Bore — B | 460.2 mm | 18.12 in |
| Plate, RF — C | 34.5 mm | 1.36 in |
| Plate, FF — C | 30.5 mm | 1.20 in |
| Blind, RF — C | 34.5 mm | 1.36 in |
| Blind, FF — C | 30.5 mm | 1.20 in |
IS 9523 PN 40 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 685 mm | 26.97 in |
| Bolt circle — K | 610 mm | 24.02 in |
| Number of bolts | 20 | |
| Hole dia — L | 40 mm | 1.57 in |
| Raised face — d1 | 560 mm | 22.05 in |
| RF height — f | 4 mm | 0.157 in |
| Bore — B | 460.2 mm | 18.12 in |
| Plate, RF — C | 50 mm | 1.97 in |
| Plate, FF — C | 46 mm | 1.81 in |
| Blind, RF — C | 50 mm | 1.97 in |
| Blind, FF — C | 46 mm | 1.81 in |
Values are nominal, from IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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Other sizes — IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40
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DN 450 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40: common questions
What are the DN 450 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40?
DN 450 (18") to IS 9523: OD 615 mm; PCD 565 mm; bolts 20; holes 28 mm; raised face 530 mm.
Does Teshi Group manufacture DN 450 flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to IS 9523, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.
Can I download the DN 450 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 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40 chart.
Need DN 450 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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