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ASME B16.47 Class 400 Series B Welding Neck Flanges
ASME B16.47 Class 400 Series B Flanges
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- All dimensions are in inches.
- 1/4" raised face will be added to the thickness and overall length unless otherwise specified.
- 38" thru 60" sizes are the same as Series "A".
- Flat face option available.
- Extra heavy option available.
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Item # |
Nominal Pipe Size |
Outside Diameter (O) |
Minimum Thickness (T) |
Raised Face Diameter (R) |
Length Thru Hub (Y) |
Hub Diameter (X) |
Minimum Fillet Radius (r) |
Top of Hub (A) |
Bore (B) |
Approximate Weight |
Bolt Circle (C) |
Number of Holes |
Diameter of Holes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26400WNSB | Nominal Pipe Size N/A 26 | Outside Diameter (O) N/A 33.50 in | Minimum Thickness (T) N/A 3.50 in | Raised Face Diameter (R) N/A 28.00 in | Length Thru Hub (Y) N/A 5.88 in | Hub Diameter (X) N/A 27.12 in | Minimum Fillet Radius (r) N/A 0.44 in | Top of Hub (A) N/A 26.00 in | Bore (B) N/A Specified by purchaser | Approximate Weight N/A 360 lb | Bolt Circle (C) N/A 30.75 in | Number of Holes N/A 28 | Diameter of Holes N/A 1.50 in |
| 28400WNSB | Nominal Pipe Size N/A 28 | Outside Diameter (O) N/A 36.00 in | Minimum Thickness (T) N/A 3.75 in | Raised Face Diameter (R) N/A 30.00 in | Length Thru Hub (Y) N/A 6.25 in | Hub Diameter (X) N/A 29.12 in | Minimum Fillet Radius (r) N/A 0.50 in | Top of Hub (A) N/A 28.00 in | Bore (B) N/A Specified by purchaser | Approximate Weight N/A 450 lb | Bolt Circle (C) N/A 33.00 in | Number of Holes N/A 24 | Diameter of Holes N/A 1.62 in |
| 30400WNSB | Nominal Pipe Size N/A 30 | Outside Diameter (O) N/A 38.25 in | Minimum Thickness (T) N/A 4.00 in | Raised Face Diameter (R) N/A 32.25 in | Length Thru Hub (Y) N/A 6.69 in | Hub Diameter (X) N/A 31.25 in | Minimum Fillet Radius (r) N/A 0.50 in | Top of Hub (A) N/A 30.00 in | Bore (B) N/A Specified by purchaser | Approximate Weight N/A 530 lb | Bolt Circle (C) N/A 35.25 in | Number of Holes N/A 28 | Diameter of Holes N/A 1.62 in |
| 32400WNSB | Nominal Pipe Size N/A 32 | Outside Diameter (O) N/A 40.75 in | Minimum Thickness (T) N/A 4.25 in | Raised Face Diameter (R) N/A 34.38 in | Length Thru Hub (Y) N/A 7.06 in | Hub Diameter (X) N/A 33.25 in | Minimum Fillet Radius (r) N/A 0.50 in | Top of Hub (A) N/A 32.00 in | Bore (B) N/A Specified by purchaser | Approximate Weight N/A 635 lb | Bolt Circle (C) N/A 37.50 in | Number of Holes N/A 28 | Diameter of Holes N/A 1.75 in |
| 34400WNSB | Nominal Pipe Size N/A 34 | Outside Diameter (O) N/A 42.75 in | Minimum Thickness (T) N/A 4.38 in | Raised Face Diameter (R) N/A 36.50 in | Length Thru Hub (Y) N/A 7.38 in | Hub Diameter (X) N/A 35.38 in | Minimum Fillet Radius (r) N/A 0.56 in | Top of Hub (A) N/A 34.00 in | Bore (B) N/A Specified by purchaser | Approximate Weight N/A 690 lb | Bolt Circle (C) N/A 39.50 in | Number of Holes N/A 32 | Diameter of Holes N/A 1.75 in |
| 36400WNSB | Nominal Pipe Size N/A 36 | Outside Diameter (O) N/A 45.50 in | Minimum Thickness (T) N/A 4.69 in | Raised Face Diameter (R) N/A 38.62 in | Length Thru Hub (Y) N/A 7.88 in | Hub Diameter (X) N/A 37.50 in | Minimum Fillet Radius (r) N/A 0.56 in | Top of Hub (A) N/A 36.00 in | Bore (B) N/A Specified by purchaser | Approximate Weight N/A 855 lb | Bolt Circle (C) N/A 42.00 in | Number of Holes N/A 28 | Diameter of Holes N/A 1.88 in |
