ASME B16.47 Series B Class 300 Blind Flange
In line with ASME standards, YANHAO offers B16.47 Series B Class 300 Blind Flanges. The table below shows the exact sizes of the flanges. When YANHAO makes flanges, we make sure that they are exactly the right size according to the ASME standard. You can use these flanges in the oil and gas, petrochemical, and power generation industries.
We also offer custom services to meet the needs of customers who need different types of flanges and holes. Please don’t hesitate to get in touch with our professional team if you have specific technical or design needs. We will do our best to meet your needs.
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 | Minimum Thickness (T) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|
| 26 | 34.12 | 31.62 | 29.00 | 32 | 1.38 | 3.50 | 905 |
| 28 | 36.25 | 33.75 | 31.00 | 36 | 1.38 | 3.50 | 1023 |
| 30 | 39.00 | 36.25 | 33.25 | 36 | 1.50 | 3.69 | 1250 |
| 32 | 41.50 | 38.50 | 35.50 | 32 | 1.62 | 4.06 | 1556 |
| 34 | 43.62 | 40.62 | 37.50 | 36 | 1.62 | 4.06 | 1719 |
| 36 | 46.12 | 42.88 | 39.75 | 32 | 1.75 | 4.06 | 1920 |
| 38 | 48.12 | 44.88 | 41.75 | 36 | 1.75 | 4.38 | 2257 |
| 40 | 50.12 | 46.88 | 43.88 | 40 | 1.75 | 4.56 | 2550 |
| 42 | 52.50 | 49.00 | 46.00 | 36 | 1.88 | 4.69 | 2875 |
| 44 | 54.50 | 51.00 | 48.00 | 40 | 1.88 | 5.00 | 3305 |
| 46 | 57.50 | 53.75 | 50.00 | 36 | 2.00 | 5.12 | 3766 |
| 48 | 59.50 | 55.75 | 52.25 | 40 | 2.00 | 5.31 | 4183 |
| 50 | 61.50 | 57.75 | 54.25 | 44 | 2.00 | 5.50 | 4629 |
| 52 | 63.50 | 59.75 | 56.25 | 48 | 2.00 | 5.68 | 5096 |
| 54 | 65.88 | 62.12 | 58.25 | 48 | 2.00 | 5.88 | 5679 |
| 56 | 69.50 | 65.00 | 60.50 | 36 | 2.38 | 6.18 | 6642 |
| 58 | 71.94 | 67.44 | 62.75 | 40 | 2.38 | 6.38 | 7347 |
| 60 | 73.94 | 69.44 | 65.00 | 40 | 2.38 | 6.56 | 7980 |
Blind Flange
‌A blind flange, also known as a blind plate, is a flange without main hole, used to close the end of a pipe system or as an end cover for equipment such as valves and pumps. ‌A blind flange has the functions of blocking the end of a pipe and facilitating the removal of debris from the pipe. Similar to the head and pipe cap, a blind flange can also serve as an isolation and cut-off function, but it has good sealing performance and is suitable for systems that require complete isolation‌.
The structure of a blind flange includes a round or square metal sheet, one side of which has a flange surface with an outer diameter and inner diameter matching the corresponding pipe size and with several bolt holes; the other side is a smooth sealing surface. When installed on the pipe, it is fixed to the adjacent flange by bolts and nuts to form a completely closed break‌.
ASME B16.47 FLANGE CLASSES
Choose The pressure class below
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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