Blind (blind disk) the formal name of the called flange cover, and some also called blind flange. It is an intermediate flange without holes for plugging the pipe outlet. One of its functions is blocked by the end of the pipe, and the second is the role of the pipeline can be easily cleared of debris during overhaul. Blocking effect on terms with head and cap have the same effect. But the head is no way to disassemble, and blind flange plates are bolted and easily removable. Species form large sealing surface, with a flat, convex, concave and convex surfaces, tongue and groove and ring joint face. Because of its good sealing performance, the need for complete isolation systems, generally as a reliable means of isolation. Blind is a solid round shank for system under normal conditions in the isolated state. The 8-word blind plate, shaped like eight words, one end is blind plate, the other end of the throttle ring, but the same diameter as the diameter of the pipe, does not play a role in the throttle. 8-word blind plate, easy to use, you need isolation, blinding plate end, normal operation when needed, using the throttle ring-side, but can also be used to install the pipeline to fill the gap blind plate. Another significant feature is the identification, easy to install state recognizable. Flange material: carbon steel, mainly 20 # steel, Q235 material. Packing: fumigation wooden pallets can be according to customer requirements for special packaging. Product Quality: ISO9001: 2008 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health and safety management system, pressure pipe special equipment manufacturing license, the State Power Corporation, China National Petroleum Corporation a supply network members