The formal name of blind disk is called flange cover, and some are also called blind flange. It is a flange without a hole in the middle, which is used to block the pipe mouth. Blind plate is generally divided into plate blind plate, spectacle blind plate, plug plate and backing ring (plug plate and backing ring are blind to each other). There are many types of sealing surface, including plane, convex, concave convex, mortise and groove surface and ring connection surface. Materials are carbon steel, stainless steel, alloy steel, copper, aluminum, PVC and PPR.
