48 inch ASME B16.47 Series B Flange Dimensions
48 inch (DN 1200) to ASME B16.47: OD 1390 mm; thickness 63.6 mm; hub 1257 mm; pipe OD 1222.2 mm; length 148 mm.
Key to dimensions
- O
- Outside diameter of flange
- tf
- Minimum thickness of weld neck and of blind flange, excluding the raised face
- X
- Hub diameter at base
- A
- Hub diameter at the welding end
- Y
- Length through hub, excluding the raised face
- R
- Diameter of raised face
- W
- Bolt circle diameter
- Holes
- Number and diameter of bolt holes
48 inch ASME B16.47 Series B Flange Dimensions — all dimensions
Series B Class 150 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| DN | 1200 | |
| Outside dia — O | 1390 mm | 54.72 in |
| Weld neck — tf | 63.6 mm | 2.50 in |
| Blind — tf | 76.3 mm | 3.00 in |
| Hub dia — X | 1257 mm | 49.49 in |
| Hub at weld — A | 1222.2 mm | 48.12 in |
| Length thru hub — Y | 148 mm | 5.83 in |
| Raised face dia — R | 1289 mm | 50.75 in |
| Bolt circle — W | 1335.1 mm | 52.56 in |
| Number of holes | 44 | |
| Hole dia | 31.8 mm | 1.25 in |
| Bolt size | 1⅛" |
Series B Class 300 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| DN | 1200 | |
| Outside dia — O | 1510 mm | 59.45 in |
| Weld neck — tf | 127.0 mm | 5.00 in |
| Blind — tf | 133.4 mm | 5.25 in |
| Hub dia — X | 1278 mm | 50.31 in |
| Hub at weld — A | 1227.1 mm | 48.31 in |
| Length thru hub — Y | 222 mm | 8.74 in |
| Raised face dia — R | 1327 mm | 52.24 in |
| Bolt circle — W | 1416.0 mm | 55.75 in |
| Number of holes | 40 | |
| Hole dia | 50.8 mm | 2.00 in |
| Bolt size | 1⅞" |
Values are nominal, from ASME B16.47 Series B Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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FAQ
48 inch ASME B16.47 Series B Flange Dimensions: common questions
What are the 48 inch ASME B16.47 Series B Flange Dimensions?
48 inch (DN 1200) to ASME B16.47: OD 1390 mm; thickness 63.6 mm; hub 1257 mm; pipe OD 1222.2 mm; length 148 mm.
Does Teshi Group manufacture 48 inch 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 48 inch 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 Series B Flange Dimensions chart.
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