ASME B16.47 Series B Class 300 Welding Neck Flanges
YANHAO is a manufacturer, supplier and exporter of ASME B16.47 Series A Class 300 Weld Neck Flanges suitable for large diameter pipes from NPS 26 to NPS 60. B Series flanges are medium-pressure compact flanges and in most cases, these flanges have a smaller bolt circle diameter than A Series flanges. The welded neck design adds greater strength and stability, capable of withstanding greater pipe loads, and can be used in general household, commercial and industrial application
Yanhao’s ASME B16.47 B series casting flanges are made of stainless steel, carbon steel, and alloy steel. We usually supply standard flanges; if you need to order a special model and bore size, please contact our experts.
Class 300 dimensions | ASME B16.47 Series B Flange
| Nominal Pipe Size | Outside Diameter (O) | Bolt Circle (W) | Raised Face Diameter (R) | Number of Holes | Diameter of Holes | Bore (B) | Top of Hub (A) | Hub Diameter (X) | Minimum Fillet Radius (r) | Minimum Thickness (T) | Length Thru Hub (Y) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26 | 34.12 | 31.62 | 29.00 | 32 | 1.38 | Specified by purchaser | 26.19 | 27.62 | 0.56 | 3.50 | 5.69 | 400 |
| 28 | 36.25 | 33.75 | 31.00 | 36 | 1.38 | Specified by purchaser | 28.19 | 29.75 | 0.56 | 3.50 | 5.88 | 450 |
| 30 | 39.00 | 36.25 | 33.25 | 36 | 1.50 | Specified by purchaser | 30.25 | 32.00 | 0.56 | 3.69 | 6.22 | 550 |
| 32 | 41.50 | 38.50 | 35.50 | 32 | 1.62 | Specified by purchaser | 32.25 | 34.00 | 0.62 | 4.06 | 6.62 | 685 |
| 34 | 43.62 | 40.62 | 37.50 | 36 | 1.62 | Specified by purchaser | 34.25 | 36.12 | 0.62 | 4.06 | 6.81 | 750 |
| 36 | 46.12 | 42.88 | 39.75 | 32 | 1.75 | Specified by purchaser | 36.25 | 38.00 | 0.62 | 4.06 | 7.12 | 840 |
| 38 | 48.12 | 44.88 | 41.75 | 36 | 1.75 | Specified by purchaser | 38.25 | 40.00 | 0.62 | 4.38 | 7.56 | 915 |
| 40 | 50.12 | 46.88 | 43.88 | 40 | 1.75 | Specified by purchaser | 40.25 | 42.00 | 0.62 | 4.56 | 7.81 | 990 |
| 42 | 52.50 | 49.00 | 46.00 | 36 | 1.88 | Specified by purchaser | 42.31 | 44.00 | 0.62 | 4.69 | 8.06 | 1135 |
| 44 | 54.50 | 51.00 | 48.00 | 40 | 1.88 | Specified by purchaser | 44.31 | 46.19 | 0.62 | 5.00 | 8.44 | 1235 |
| 46 | 57.50 | 53.75 | 50.00 | 36 | 2.00 | Specified by purchaser | 46.31 | 48.38 | 0.62 | 5.06 | 8.75 | 1470 |
| 48 | 59.50 | 55.75 | 52.25 | 40 | 2.00 | Specified by purchaser | 48.31 | 50.31 | 0.62 | 5.06 | 8.81 | 1575 |
| 50 | 61.50 | 57.75 | 54.25 | 44 | 2.00 | Specified by purchaser | 50.31 | 52.38 | 0.62 | 5.44 | 9.25 | 1710 |
| 52 | 63.50 | 59.75 | 56.25 | 48 | 2.00 | Specified by purchaser | 52.31 | 54.44 | 0.62 | 5.62 | 9.56 | 1840 |
| 54 | 65.88 | 62.12 | 58.25 | 48 | 2.00 | Specified by purchaser | 54.31 | 56.50 | 0.62 | 5.38 | 9.44 | 1980 |
| 56 | 69.50 | 65.00 | 60.50 | 36 | 2.38 | Specified by purchaser | 56.31 | 58.81 | 0.69 | 6.06 | 10.56 | 2595 |
| 58 | 71.94 | 67.44 | 62.75 | 40 | 2.38 | Specified by purchaser | 58.31 | 60.94 | 0.69 | 6.06 | 10.81 | 2770 |
| 60 | 73.94 | 69.44 | 65.00 | 40 | 2.38 | Specified by purchaser | 60.31 | 62.94 | 0.69 | 5.94 | 10.69 | 2870 |
Weld Neck Flange
Weld Neck Flange is a type of industrial pipe connection, especially used in pressure pipeline systems. Thanks to the high structural strength, sealing performance, corrosion resistance, and the characteristics of withstanding high temperature and pressure of the welding neck flange, it can be used for oil transportation pipelines, ship pipeline systems, and the transportation of raw materials in chemical plants, etc.
ASME B16.47 Forged Flanges FLANGE CLASSES
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About YANHAO
YANHAO is a flange manufacturer located in Hebei Province, China. It is one of the few professional flange suppliers in China.
We have many years of experience in flange production and have multiple flange production lines. We have sufficient stock of raw materials, rich inventory, fast delivery, and can ship within three days. At the same time, the price is affordable. You are welcome to consult and purchase!
In addition, we can provide a variety of bespoke flanges and pipe fittings. Customers can give drawings or samples, and our company will produce them to fit your specific requirements.
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