Threaded flange refers to a kind of flange that uses threads to connect with pipes. In design, it can be treated as loose flange. The advantage is that there is no need for welding, and the additional torque to the cylinder or pipeline caused by flange deformation is very small. The disadvantage is that the flange is thick and the cost is high. It is applicable to the connection of high-pressure pipes.
Threaded flange is a non welded flange, which processes the inner hole of the flange into pipe threads and realizes the connection with the pipe with threads. Compared with flat welding flange or butt welding flange, threaded flange has the characteristics of convenient installation and maintenance, and can be used on some pipelines that are not allowed to be welded on site. Alloy steel flange has sufficient strength, but it is not easy to weld, or the welding performance is not good. Threaded flange can also be selected. However, under the condition that the pipeline temperature changes sharply or the temperature is higher than 260 ℃ and lower than -45 ℃, it is recommended not to use threaded flanges to avoid leakage.
