DN 450 ASME B16.5 Plate Flange & Blind Flange Dimensions
DN 450 (18") to ASME B16.5: OD 635 mm; PCD 577.9 mm; bolts 16; holes 31.8 mm; raised face 533.4 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 ASME B16.5 Plate Flange & Blind Flange Dimensions — all dimensions
ASME B16.5 Class 150 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 635 mm | 25.00 in |
| Bolt circle — K | 577.9 mm | 22.75 in |
| Number of bolts | 16 | |
| Hole dia — L | 31.8 mm | 1.25 in |
| Raised face — d1 | 533.4 mm | 21.00 in |
| RF height — f | 1.6 mm | 0.063 in |
| Bore — B | 461.8 mm | 18.18 in |
| Plate, RF — C | 39.7 mm | 1.56 in |
| Plate, FF — C | 38.1 mm | 1.50 in |
| Blind, RF — C | 39.7 mm | 1.56 in |
| Blind, FF — C | 38.1 mm | 1.50 in |
ASME B16.5 Class 300 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 711.2 mm | 28.00 in |
| Bolt circle — K | 628.6 mm | 24.75 in |
| Number of bolts | 24 | |
| Hole dia — L | 34.9 mm | 1.37 in |
| Raised face — d1 | 533.4 mm | 21.00 in |
| RF height — f | 1.6 mm | 0.063 in |
| Bore — B | 461.8 mm | 18.18 in |
| Plate, RF — C | 60.3 mm | 2.37 in |
| Plate, FF — C | 58.7 mm | 2.31 in |
| Blind, RF — C | 60.3 mm | 2.37 in |
| Blind, FF — C | 58.7 mm | 2.31 in |
ASME B16.5 Class 400 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 710 mm | 27.95 in |
| Bolt circle — K | 628.6 mm | 24.75 in |
| Number of bolts | 24 | |
| Hole dia — L | 38.1 mm | 1.50 in |
| Raised face — d1 | 533.4 mm | 21.00 in |
| RF height — f | 6.4 mm | 0.252 in |
| Bore — B | 461.8 mm | 18.18 in |
| Plate, RF — C | 73.1 mm | 2.88 in |
| Plate, FF — C | 66.7 mm | 2.63 in |
| Blind, RF — C | 73.1 mm | 2.88 in |
| Blind, FF — C | 66.7 mm | 2.63 in |
ASME B16.5 Class 600 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 745 mm | 29.33 in |
| Bolt circle — K | 654 mm | 25.75 in |
| Number of bolts | 20 | |
| Hole dia — L | 44.5 mm | 1.75 in |
| Raised face — d1 | 533.4 mm | 21.00 in |
| RF height — f | 6.4 mm | 0.252 in |
| Bore — B | 461.8 mm | 18.18 in |
| Plate, RF — C | 89 mm | 3.50 in |
| Plate, FF — C | 82.6 mm | 3.25 in |
| Blind, RF — C | 89 mm | 3.50 in |
| Blind, FF — C | 82.6 mm | 3.25 in |
ASME B16.5 Class 900 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 785 mm | 30.91 in |
| Bolt circle — K | 685.8 mm | 27.00 in |
| Number of bolts | 20 | |
| Hole dia — L | 50.8 mm | 2.00 in |
| Raised face — d1 | 533.4 mm | 21.00 in |
| RF height — f | 6.4 mm | 0.252 in |
| Bore — B | 461.8 mm | 18.18 in |
| Plate, RF — C | 108 mm | 4.25 in |
| Plate, FF — C | 101.6 mm | 4.00 in |
| Blind, RF — C | 108 mm | 4.25 in |
| Blind, FF — C | 101.6 mm | 4.00 in |
Values are nominal, from ASME B16.5 Plate Flange & Blind Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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DN 450 ASME B16.5 Plate Flange & Blind Flange Dimensions: common questions
What are the DN 450 ASME B16.5 Plate Flange & Blind Flange Dimensions?
DN 450 (18") to ASME B16.5: OD 635 mm; PCD 577.9 mm; bolts 16; holes 31.8 mm; raised face 533.4 mm.
Does Teshi Group manufacture DN 450 flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to ASME B16.5, 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 ASME B16.5 Plate Flange & Blind Flange Dimensions 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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Share your drawing, bill of materials or technical requirements with the Teshi team.