Threaded flange refers to a kind of flange connected with pipeline by thread. In design, it can be treated as loose flange. The utility model has the advantages that welding is not required, and the additional torque to the cylinder or pipeline caused by flange deformation is very small. The disadvantage is that the flange thickness is large and the cost is high. It is applicable to the connection of high-pressure pipeline.
Threaded flange is a non welded flange that processes the inner hole of the flange into pipe thread and realizes the connection with the threaded pipe. 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 flange to avoid leakage.
