What is threaded flange?

What is threaded flange?

The threaded flange is a kind of flange connected with the pipe by the thread. When designing, it can be treated by loose flange. The advantage is that no welding is required, and the additional torque generated by the flange deformation on the cylinder or pipe is small. The disadvantage is that the flange thickness is large and the cost is high. Suitable for high pressure pipeline connection.

Relevant precautions：

The threaded flange is a kind of non-welded flange that processes the inner hole of the flange into a pipe thread and is connected with a pipe with a thread. Compared with the slip on flange or welding neck flange, the threaded flange has the characteristics of convenient installation and maintenance, and can be used in some pipelines that are not allowed to be welded on site. Alloy steel flange has enough strength, but it is not easy to weld, or the welding performance is not good, you can also choose threaded flange. However, when the pipe temperature changes sharply or the temperature is higher than 260 ° C and lower than -45 ° C. It is recommended not to use threaded flanges to avoid leakage.

Characteristics of threaded flanges:

The outer diameter of the steel pipe used for common threaded flanges should be 165.1mm. When 60 taper pipe thread is used, the outer diameter of the steel pipe for DN65 flange should be 73mm; The outer diameter of the steel pipe for DN125 flange should be 141.3mm. Therefore, in use, special attention should be paid to the nominal pressure range and nominal diameter range of the threaded stainless steel flange with reference to ISO7005-1. Here to share with you the characteristics of the lower thread flange.

First of all, the threaded flange, which is often said to be the wire buckle, is generally used for the connection of welded pipes. It is a flange structure type widely used in engineering construction, which has the advantages of convenient installation on site and no need for welding.

In addition, the sealing surface of the threaded flange has two types, such as full plane and sudden surface. Take into account the structural characteristics of the threaded flange. Therefore, it is not suitable for flammable/explosive and highly and highly hazardous occasions. The nuclear pressure is small, such as air conditioning water systems, etc., can be used safely, and the threaded flange is suitable for the British pipe series.