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What is a Q345B blind flange? blind plate specifications, models, and parameters

2025-5-26

Q345B blind flangeis a kind of flange with no hole in the middle, which is mainly used to plug the pipeline mouth and isolate and cut off the medium in the pipeline.,Good sealing performance,Environmental protection and energy saving,Wide range of application,Various materials,be of simple construction,favorable price。The following is to introduce the Q345B blind flange:

1、Brief introduction of Q345B blind flange

Q345B blind flangeis a kind of flange with no hole in the middle, which is mainly used to plug the pipe mouth. Its function is similar to that of the head and pipe cap, but the blind plate seal is a detachable sealing device, and the head seal is usually not ready to be opened again.,was developed and designed by Jianing。

Q345B blind flange

Q345B blind flange

2、Q345B blind flange use

The purpose of Q345B blind flange is introduced as follows:

  1. Completely isolated medium
  2. The Q345B blind flange can ensure that the medium in the pipeline system is completely isolated, prevent the medium from leaking when maintaining, inspecting or switching equipment, and ensure the safety of personnel and the integrity of equipment.

  3. Control medium flow direction
  4. The Q345B blind flange can also be used to control the flow direction of the medium in the pipeline. By installing the Q345B blind flange, the flow path of the medium can be changed to meet the process requirements or optimize the production process.

  5. Prevent medium leakage
  6. The Q345B blind flange has excellent sealing performance, which can effectively prevent the leakage of medium in the pipeline. This is very important to protect the environment and personnel safety, especially when dealing with toxic, harmful or flammable and explosive media.

  7. Auxiliary device of safety valve
  8. In some safety valves or pressure relief devices, Q345B blind flanges are used as auxiliary devices to ensure that the flow of media can be quickly cut off in an emergency.

  9. Overhaul and replace equipment
  10. In the pipeline system, the equipment needs regular maintenance and replacement. The use of Q345B blind flanges makes this process safer and more convenient. By installing the Q345B blind flange, the equipment that needs to be repaired or replaced can be isolated without affecting the operation of the whole pipeline system.

Q345B blind flange

Q345B blind flange

3、Q345B blind flange use

The purpose of Q345B blind flange is introduced as follows:

  1. Convenient maintenance and repair
  2. The disassembly of the Q345B blind flange makes the maintenance and repair of the pipeline system more convenient and faster, and improves the work efficiency.

  3. Improve security
  4. By setting the Q345B blind flange, the medium leakage caused by the lax closing of the cut-off valve can be avoided, thus reducing the accident risk and improving the safety of the pipeline system.

  5. Protect equipment and pipelines
  6. In some cases, the pipeline system may be impacted by high pressure, high temperature or corrosive media. The use of Q345B blind flanges can protect equipment and pipelines from these harsh conditions and prolong their service life.

  7. Overhaul and replace equipment
  8. In the pipeline system, the equipment needs regular maintenance and replacement. The use of Q345B blind flanges makes this process safer and more convenient. By installing the Q345B blind flange, the equipment that needs to be repaired or replaced can be isolated without affecting the operation of the whole pipeline system.

  9. Improve security
  10. By setting the Q345B blind flange, the medium leakage caused by the lax closing of the cut-off valve can be avoided, thus reducing the accident risk and improving the safety of the pipeline system.

Q345B blind flange

Q345B blind flange

4、Introduction of advantages of Q345B blind flange

The advantages of Q345B blind flange are as follows:

  1. Simple structure and convenient installation
  2. The structure of the Q345B blind flange is relatively simple, and it usually consists of three parts: the main body, the seal and the connector. This structure makes the installation and disassembly of the Q345B blind flange very convenient and can quickly adapt to different use scenarios and needs. During pipeline maintenance, replacement or system debugging, the Q345B blind flange can quickly achieve isolation and cut-off functions, improving work efficiency.

  3. Excellent sealing performance
  4. The Q345B blind flange can achieve excellent sealing performance through its unique sealing surface design and material selection. Whether it is plane seal, concave-convex seal or other forms of seal, the Q345B blind flange can ensure that the medium in the pipeline or equipment will not leak, thus ensuring the safety and stability of production. This sealing performance is of great significance for preventing medium pollution and protecting equipment and environment.

  5. Wide range of application
  6. Q345B blind flanges are widely used in the sealing of pipelines and equipment in industries such as chemical lines. In these industries, Q345B blind flange can effectively prevent media leakage and pollution, and ensure the safety and stability of production. At the same time, because of its simple structure and convenient installation, Q345B blind flange are often used in pipeline maintenance and replacement, which provides strong support for industrial production.

  7. Recycling, environmental protection and energy saving.
  8. Some Q345B blind flanges made of special materials have the characteristics of Recoverable utilization. This kind of Q345B blind flange has low energy consumption and pollution in the process of production and use, which conforms to the concept of green development. With the continuous improvement of environmental awareness, recyclable Q345B blind flanges will gradually become the mainstream products in the market.

  9. Economical and practical
  10. Although the initial investment of the Q345B blind flange may be relatively high, its excellent performance and long life make the overall cost-effectiveness very high. The Q345B blind flange can reduce the loss caused by medium leakage and pollution, and reduce the maintenance cost and production cost.

Q345B blind flange

Q345B blind flange

5、Q345B blind flange HD picture real shot

High-definition pictures of reliable Q345B blind flange at a glance。

Q345B blind flange

Q345B blind flange

Note: All the pictures in this article were taken by Jianing forging manufacturer.。

Q345B blind flangeStrong adaptability,easy installation,Economical and practical,be of simple construction,Wide range of application,it has been widely used in Petroleum industry, Natural gas industry, make paper, food processing, pharmacy and other industries,is a common sealing product for pipelines and equipment.。