ASME B16.47 Series B Class 150 Blind Flange

In line with ASME standards, YANHAO offers B16.47 Series B Class 150 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 150 dimensions | ASME B16.47 Series B Flange

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesMinimum Thickness (T)Approximate Weight (lbs)
2630.9429.3128.00360.881.75375
2832.9431.3130.00400.881.88455
3034.9433.3132.00440.882.00545
3237.0635.4434.00480.882.12648
3439.5637.6936.25401.002.25782
3641.6239.7538.25441.002.31890
3844.2542.1240.25401.122.501090
4046.2544.1242.50441.122.621247
4248.2546.1244.50481.122.691393
4450.2548.1246.50521.122.811579
4652.8150.5648.62401.252.941825
4854.8152.5650.75441.253.062045
5056.8154.5652.75481.253.182284
5258.8156.5654.75521.253.312547
5461.0058.7556.75561.253.442848
5663.0060.7558.75601.253.563145
5865.9463.4460.75481.383.683560
6067.9465.4463.00521.383.813913
  • All dimensions are in inches.
  • These flanges will be furnished with a 1/16″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Blind Flange

blind flanges
Blind flanges

‌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.

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ASME B16.47 FLANGE CLASSES

Choose The pressure class below

About YANHAO

Aerial view of YANHAO Factory
Aerial view of YANHAO Factory

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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