DN 750 ASME B16.47 Large Diameter Plate & Blind Flange Dimensions
DN 750 (30") to ASME B16.47: OD 985 mm; PCD 914.4 mm; bolts 28; holes 34.9 mm; raised face 857 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 750 ASME B16.47 Large Diameter Plate & Blind Flange Dimensions — all dimensions
ASME B16.47 Series A Class 150 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 985 mm | 38.78 in |
| Bolt circle — K | 914.4 mm | 36.00 in |
| Number of bolts | 28 | |
| Hole dia — L | 34.9 mm | 1.37 in |
| Raised face — d1 | 857 mm | 33.74 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 765 mm | 30.12 in |
| Plate, RF — C | 73.1 mm | 2.88 in |
| Plate, FF — C | 71.1 mm | 2.80 in |
| Blind, RF — C | 73.1 mm | 2.88 in |
| Blind, FF — C | 71.1 mm | 2.80 in |
ASME B16.47 Series A Class 300 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 1090 mm | 42.91 in |
| Bolt circle — K | 997 mm | 39.25 in |
| Number of bolts | 28 | |
| Hole dia — L | 47.6 mm | 1.87 in |
| Raised face — d1 | 857 mm | 33.74 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 765 mm | 30.12 in |
| Plate, RF — C | 90.5 mm | 3.56 in |
| Plate, FF — C | 88.5 mm | 3.48 in |
| Blind, RF — C | 93.7 mm | 3.69 in |
| Blind, FF — C | 91.7 mm | 3.61 in |
ASME B16.47 Series B Class 150 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 885 mm | 34.84 in |
| Bolt circle — K | 846.1 mm | 33.31 in |
| Number of bolts | 44 | |
| Hole dia — L | 22.2 mm | 0.874 in |
| Raised face — d1 | 813 mm | 32.01 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 765 mm | 30.12 in |
| Plate, RF — C | 43 mm | 1.69 in |
| Plate, FF — C | 41 mm | 1.61 in |
| Blind, RF — C | 49.3 mm | 1.94 in |
| Blind, FF — C | 47.3 mm | 1.86 in |
ASME B16.47 Series B Class 300 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 990 mm | 38.98 in |
| Bolt circle — K | 920.8 mm | 36.25 in |
| Number of bolts | 36 | |
| Hole dia — L | 38.1 mm | 1.50 in |
| Raised face — d1 | 845 mm | 33.27 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 769.9 mm | 30.31 in |
| Plate, RF — C | 92.1 mm | 3.63 in |
| Plate, FF — C | 90.1 mm | 3.55 in |
| Blind, RF — C | 92.1 mm | 3.63 in |
| Blind, FF — C | 90.1 mm | 3.55 in |
Values are nominal, from ASME B16.47 Large Diameter Plate & Blind Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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FAQ
DN 750 ASME B16.47 Large Diameter Plate & Blind Flange Dimensions: common questions
What are the DN 750 ASME B16.47 Large Diameter Plate & Blind Flange Dimensions?
DN 750 (30") to ASME B16.47: OD 985 mm; PCD 914.4 mm; bolts 28; holes 34.9 mm; raised face 857 mm.
Does Teshi Group manufacture DN 750 flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to ASME B16.47, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.
Can I download the DN 750 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 B16.47 Large Diameter Plate & Blind Flange Dimensions chart.
Need DN 750 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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