DN 1200 ASME B16.47 Large Diameter Plate & Blind Flange Dimensions
DN 1200 (48") to ASME B16.47: OD 1510 mm; PCD 1422.4 mm; bolts 44; holes 41.3 mm; raised face 1359 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 1200 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 | 1510 mm | 59.45 in |
| Bolt circle — K | 1422.4 mm | 56.00 in |
| Number of bolts | 44 | |
| Hole dia — L | 41.3 mm | 1.63 in |
| Raised face — d1 | 1359 mm | 53.50 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 1222.2 mm | 48.12 in |
| Plate, RF — C | 106.4 mm | 4.19 in |
| Plate, FF — C | 104.4 mm | 4.11 in |
| Blind, RF — C | 106.4 mm | 4.19 in |
| Blind, FF — C | 104.4 mm | 4.11 in |
ASME B16.47 Series A Class 300 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 1465 mm | 57.68 in |
| Bolt circle — K | 1371.6 mm | 54.00 in |
| Number of bolts | 32 | |
| Hole dia — L | 50.8 mm | 2.00 in |
| Raised face — d1 | 1302 mm | 51.26 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 1222.2 mm | 48.12 in |
| Plate, RF — C | 131.8 mm | 5.19 in |
| Plate, FF — C | 129.8 mm | 5.11 in |
| Blind, RF — C | 131.8 mm | 5.19 in |
| Blind, FF — C | 129.8 mm | 5.11 in |
ASME B16.47 Series B Class 150 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 1390 mm | 54.72 in |
| Bolt circle — K | 1335.1 mm | 52.56 in |
| Number of bolts | 44 | |
| Hole dia — L | 31.8 mm | 1.25 in |
| Raised face — d1 | 1289 mm | 50.75 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 1223.7 mm | 48.18 in |
| Plate, RF — C | 63.6 mm | 2.50 in |
| Plate, FF — C | 61.6 mm | 2.43 in |
| Blind, RF — C | 76.3 mm | 3.00 in |
| Blind, FF — C | 74.3 mm | 2.93 in |
ASME B16.47 Series B Class 300 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 1510 mm | 59.45 in |
| Bolt circle — K | 1416 mm | 55.75 in |
| Number of bolts | 40 | |
| Hole dia — L | 50.8 mm | 2.00 in |
| Raised face — d1 | 1327 mm | 52.24 in |
| RF height — f | 2 mm | 0.079 in |
| Bore — B | 1228.6 mm | 48.37 in |
| Plate, RF — C | 127 mm | 5.00 in |
| Plate, FF — C | 125 mm | 4.92 in |
| Blind, RF — C | 133.4 mm | 5.25 in |
| Blind, FF — C | 131.4 mm | 5.17 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 1200 ASME B16.47 Large Diameter Plate & Blind Flange Dimensions: common questions
What are the DN 1200 ASME B16.47 Large Diameter Plate & Blind Flange Dimensions?
DN 1200 (48") to ASME B16.47: OD 1510 mm; PCD 1422.4 mm; bolts 44; holes 41.3 mm; raised face 1359 mm.
Does Teshi Group manufacture DN 1200 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 1200 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 1200 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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