The normal name of the blind disk is called the flange cover, and some are also called the blind flange. It is a flange without a hole in the middle, which is used to block pipe openings.
There are generally four types: forging, casting and forging, plate cutting, and casting. Among them, forging products have the highest price, followed by medium plates, and casting and forging products are the lowest. And casting is the most inferior process. The blind flange quality is better for forging and medium plates, while forging and forging are slightly worse.