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    • ASME/ANSI B16.47Expand
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        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
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        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
      • Series BExpand
        • Class 75 Welding Neck
        • Class 75 Blind Flange
        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
        • Class 600 Welding Neck
        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
    • ASME/ANSI B16.5Expand
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      • ANSI B16.5 Class 300 Flanges
      • ANSI B16.5 Class 400 Flanges
      • ANSI B16.5 Class 600 Flanges
      • ANSI B16.5 Class 900 Flanges
      • ANSI B16.5 Class 1500 Flanges
      • ANSI B16.5 Class 2500 Flanges
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YANHAO
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Flanges · Pipes · Fittings
Home / Flanges / ASME B16.47 Series A Class 300 Blind Flange

ASME B16.47 Series A Class 300 Blind Flange

  • ASME B16.47 Series B Class 900 Blind Flange
    ASME B16.47 Series A Class 300 Blind Flange

YANHAO ASME B16.47 Series A Class 300 Blind Flanges are made of high-quality materials such as stainless steel, carbon steel and alloy steel. The flanges we produce are designed to meet the strict specifications stipulated by ASME and are suitable for various applications in the oil and gas, petrochemical and power generation industries.

We also provide customized services to meet customer needs for flanges of special types and apertures. If you have specific technical specifications or design requirements, please contact our professional team.

Tags: ASME B16.47, Blind Flanges, Class 300, Series A

Inquiry/Request Sample for Free!

Customized flanges

Class 300 dimensions | ASME B16.47 Series A Flange

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesMinimum Thickness (T)Approximate Weight (lbs)
2638.2534.5029.50281.753.311079
2840.7537.0031.50281.753.561315
3043.0039.2533.75281.883.751545
3245.2541.5036.00282.003.941795
3447.5043.5038.00282.004.122068
3650.0046.0040.25322.124.382435
3846.0043.0040.50321.624.252001
4048.7545.5042.75321.754.502380
4250.7547.5044.75321.754.692689
4453.2549.7547.00321.884.883079
4655.7552.0049.00282.005.063500
4857.7554.0051.25322.005.253896
5060.2556.2553.50322.125.504442
5262.2558.2555.50322.125.694906
5465.2561.0057.75282.386.005684
5667.2563.0059.75282.386.066099
5869.2565.0062.00322.386.256669
6071.2567.0064.00322.386.447274
  • 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.

Learn More

ASME B16.47 FLANGE CLASSES

Choose The pressure class below

ASME B16.47 Series A

Welding Neck FlangesBlind Flanges
Class 150Class 150
Class 300Class 300
Class 400Class 400
Class 600Class 600
Class 900Class 900

ASME B16.47 Series B

Welding Neck FlangesBlind Flanges
Class 75Class 75
Class 150Class 150
Class 300Class 300
Class 400Class 400
Class 600Class 600
Class 900Class 900

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.

Learn more about YANHAO >>

Check Our Certificates

Certificate for Material Manufacturer: ISO 14001:2015
Certificate for Material Manufacturer: ISO 14001:2015
Certificate for Material Manufacturer: ISO 14001:2015
Certificate for Material Manufacturer: ISO 14001:2015
Certificate for Material Manufacturer: ISO 14001:2015
Certificate for Material Manufacturer: ISO 14001:2015
GB/T 19001-2016/ISO 9001:2015
CQM: GB/T 19001-2016/ISO 9001:2015
GB/T 45001-2020/ISO 45001:2018
CQM: GB/T 45001-2020/ISO 45001:2018
GB/T 24001-2016/SO 14001:2015
CQM: GB/T 24001-2016/SO 14001:2015
Q/SHS 0001.1-2001 Q/SY 1002.1-2013
CQM: Q/SHS 0001.1-2001 Q/SY 1002.1-2013

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Having Questions? Contact Now!

  • Tel: +86-133-1307-3735
  • Email Us: sales@yanhaocn.com
  • Whatsapp:  +86 13313073735

As a leading Chinese flange manufacturer, we are committed to delivering superior-quality pipe flanges at competitive prices.

Our extensive experience and cutting-edge production technology ensure that our products meet the highest industry standards.

We pride ourselves on our ability to provide tailored solutions to meet the diverse needs of our clients, ensuring that our flanges are perfectly suited for a wide range of applications.

Trust us to be your reliable partner for all your flange requirements.

Service

  • Custom Flanges

Flange Types

  • Weld Neck Flanges
  • Socket Weld Flanges
  • Slip-On Flanges
  • Lap Joint Flanges
  • Threaded Flanges
  • Blind Flanges

Flange Materials

  • Stainless Steel Flanges
  • Carbon Steel Flanges
  • Alloy Steel Flanges

Flange Standards

  • B16.47 Flanges
  • B16.5 Flanges
  • EN Standard Flange

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  • Home
  • Flanges
    • ASME/ANSI B16.47
      • Series A
        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
        • Class 600 Welding Neck
        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
      • Series B
        • Class 75 Welding Neck
        • Class 75 Blind Flange
        • Class 150 Welding Neck
        • Class 150 Blind Flange
        • Class 300 Welding Neck
        • Class 300 Blind Flange
        • Class 400 Welding Neck
        • Class 400 Blind Flange
        • Class 600 Welding Neck
        • Class 600 Blind Flange
        • Class 900 Welding Neck
        • Class 900 Blind Flange
    • ASME/ANSI B16.5
      • ANSI B16.5 Class 150 Flanges
      • ANSI B16.5 Class 300 Flanges
      • ANSI B16.5 Class 400 Flanges
      • ANSI B16.5 Class 600 Flanges
      • ANSI B16.5 Class 900 Flanges
      • ANSI B16.5 Class 1500 Flanges
      • ANSI B16.5 Class 2500 Flanges
    • Flange types
      • Weld Neck Flanges
      • Slip-On Flanges
      • Blind Flanges
      • Lap Joint Flanges
      • Socket Weld Flanges
      • Threaded Flanges
    • Flange Standard
      • ANSI Flange Standard
      • ASME Flange Standard
      • EN Flange Standard
    • Custom Flanges
    • Flange Material
      • Stainless Steel Flanges
      • Carbon Steel Flanges
      • Alloy Steel Flanges
  • Fittings
    • Elbow
      • 45-Degree Long Radius Elbow
      • 90-Degree Long Radius Elbow
      • 180 Degree Long Radius Bend
      • 45-degree Elbow Pipe Fitting
      • 90-Degree Short Radius Elbow
      • 180-Degree Short Radius Bend
  • Pipes
    • Insulated Steel Pipe
    • Anti-corrosion Steel Pipe
  • About Us
    • Blog
    • Help Center & FAQ
    • Project cases
    • Downloads
  • Contact