Flange, also known as a flange, usually refers to a connection in the periphery of a few holes for fixing for connection. Widely used in machinery, the form of strange shapes, as long as the flange is called, from the English flange. The medium used to connect the tubes is a ring of plastic material that is plastically deformable and of a certain strength (and now also has a non-circular flange connection). Most gaskets are cut from non-metal plates, or made to size by professional factories.
Flange cover also known as blind flange, blind. Is the middle of the flange without holes, for sealing pipe plugs. The role of welding head and threaded cap is the same, but the blind flange and threaded cap can be removed at any time, while the welding head will not work. Sealing surface in the form of more types, a plane, convex, concave and convex surface, tongue and groove surface, the ring connecting surface.
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