30 inch ASME B16.47 Series B Flange Dimensions
30 inch (DN 750) to ASME B16.47: OD 885 mm; thickness 43.0 mm; hub 787 mm; pipe OD 763.5 mm; length 98 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
30 inch ASME B16.47 Series B Flange Dimensions — all dimensions
Series B Class 150 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| DN | 750 | |
| Outside dia — O | 885 mm | 34.84 in |
| Weld neck — tf | 43.0 mm | 1.69 in |
| Blind — tf | 49.3 mm | 1.94 in |
| Hub dia — X | 787 mm | 30.98 in |
| Hub at weld — A | 763.5 mm | 30.06 in |
| Length thru hub — Y | 98 mm | 3.86 in |
| Raised face dia — R | 813 mm | 32.01 in |
| Bolt circle — W | 846.1 mm | 33.31 in |
| Number of holes | 44 | |
| Hole dia | 22.2 mm | 0.874 in |
| Bolt size | ¾" |
Series B Class 300 (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| DN | 750 | |
| Outside dia — O | 990 mm | 38.98 in |
| Weld neck — tf | 92.1 mm | 3.63 in |
| Blind — tf | 92.1 mm | 3.63 in |
| Hub dia — X | 813 mm | 32.01 in |
| Hub at weld — A | 768.4 mm | 30.25 in |
| Length thru hub — Y | 156 mm | 6.14 in |
| Raised face dia — R | 845 mm | 33.27 in |
| Bolt circle — W | 920.8 mm | 36.25 in |
| Number of holes | 36 | |
| Hole dia | 38.1 mm | 1.50 in |
| Bolt size | 1⅜" |
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
30 inch ASME B16.47 Series B Flange Dimensions: common questions
What are the 30 inch ASME B16.47 Series B Flange Dimensions?
30 inch (DN 750) to ASME B16.47: OD 885 mm; thickness 43.0 mm; hub 787 mm; pipe OD 763.5 mm; length 98 mm.
Does Teshi Group manufacture 30 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 30 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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