1. The characteristics of the two are different: the normal name of Spectacle Blind Flange products is called flange cover, and some are called blind flange or blocked pipe. It is a flange without a hole in the middle. It is mainly used for the front end of the pipe seal and is used to seal the mouth. The seal of the head is not ready to be opened again. The flange blind plate is made of carbon steel, alloy, stainless steel, plastic, etc. The flange blind plate has the same functions as isolation, cutting, head and pipe cover. Because of its good sealing performance, for A system that requires complete separation, generally used as a constant means of isolation, a blind plate is a solid with a handle, generally used to isolate the general condition of the system. It is more convenient to use Spectacle Blind Flange products, requiring separation, using the end of the blind plate, which requires For normal operation, use the throttling ring yellow, which can also be used to fill the installation gap of the blind plate on the pipeline.

　　2. The two applications are different:

　　(1) The application of flange, due to its good performance characteristics, is widely used in chemical, construction, petroleum, sanitation, pipeline, fire protection and other basic projects.

　　(2) In the pipeline strength test or sealing test, the blind plate in the original start-up preparation stage cannot be used at the same time with the connecting equipment (such as turbines, compressors, gasifiers, reactors, etc.), and must be installed at the connection between the equipment and the pipeline. Spectacle Blind Flange products. Various process material tubes are connected in the boundary area outside the boundary area. When the equipment stops running, a blind plate should be set at the shut-off valve.