ASME B16.5 Class 300 Flanges | Blind
ASME B16.5 Class 300 Blind Flanges are designed without a central hole or opening., It can be installed on the pipeline port and tightly connected to the pipeline flange using fasteners to achieve isolation or sealing.
YANHAO ASME B16.5 blind flanges are made of stainless steel, carbon steel, and alloy steel, and can be galvanized after heat treatment according to application requirements. We also provide additional components such as gasket flanges, bolts, nuts, flange covers, or flange cover gaskets. We usually offer standard flanges; if you need to order special types of flanges, please get in touch with our experts.
Class 300(blind) dimensions | ASME B16.5 Flange
| Nominal Pipe Size | Outside Diameter (O) | Bolt Circle (W) | Raised Face Diameter (R) | Number of Holes | Diameter of Holes | Thickness (T) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|
| 1/2 | 3.75 | 2.62 | 1.38 | 4 | 0.63 | 0.50 | 2 |
| 3/4 | 4.62 | 3.25 | 1.69 | 4 | 0.75 | 0.56 | 3 |
| 1 | 4.88 | 3.50 | 2.00 | 4 | 0.75 | 0.62 | 3 |
| 1 1/4 | 5.25 | 3.88 | 2.50 | 4 | 0.75 | 0.69 | 4 |
| 1 1/2 | 6.12 | 4.50 | 2.88 | 4 | 0.88 | 0.75 | 6 |
| 2 | 6.50 | 5.00 | 3.62 | 8 | 0.75 | 0.81 | 8 |
| 2 1/2 | 7.50 | 5.88 | 4.12 | 8 | 0.88 | 0.94 | 12 |
| 3 | 8.25 | 6.62 | 5.00 | 8 | 0.88 | 1.06 | 16 |
| 3 1/2 | 9.00 | 7.25 | 5.50 | 8 | 0.88 | 1.12 | 21 |
| 4 | 10.00 | 7.88 | 6.19 | 8 | 0.88 | 1.19 | 27 |
| 5 | 11.00 | 9.25 | 7.31 | 8 | 0.88 | 1.31 | 35 |
| 6 | 12.50 | 10.62 | 8.50 | 12 | 0.88 | 1.38 | 50 |
| 8 | 15.00 | 13.00 | 10.62 | 12 | 1.00 | 1.56 | 81 |
| 10 | 17.50 | 15.25 | 12.75 | 16 | 1.13 | 1.81 | 124 |
| 12 | 20.50 | 17.75 | 15.00 | 16 | 1.25 | 1.94 | 185 |
| 14 | 23.00 | 20.25 | 16.25 | 20 | 1.25 | 2.06 | 250 |
| 16 | 25.50 | 22.50 | 18.50 | 20 | 1.38 | 2.19 | 295 |
| 18 | 28.00 | 24.75 | 21.00 | 24 | 1.38 | 2.31 | 395 |
| 20 | 30.50 | 27.00 | 23.00 | 24 | 1.38 | 2.44 | 505 |
| 22 | 33.00 | 29.25 | 25.25 | 24 | 1.63 | 2.56 | 640 |
| 24 | 36.00 | 32.00 | 27.25 | 24 | 1.63 | 2.69 | 790 |
Blind Flange
Blind Flanges are flanges without a central hole and are also commonly known as Blank Flanges or Flange Covers. The primary function of blind flanges is to isolate pipelines or close off equipment ports. They are typically used in industry for pipeline blocking, segmental sealing of pipelines, preventing intermixing of media, leaks.
ANSI B16.5 Forged Flanges FLANGE CLASSES
Choose your 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.
Check Our Certificates
