Butt Weld Blind Flange
Butt weld Blind flange, some also known as pipe block. It is a flange with no hole in the middle and is used for plugging the pipe mouth. The function is the same as the head and the CAP, except that the blind plate seal is a detachable sealing device and the seal of the head is not ready to be opened again. There are many types of sealing surface, there are raised face,male and female, tongue, flat face and ring joint face. Materials are carbon steel, stainless steel, alloy steel, copper, aluminum, PVC and PPR and so on.
Blind Flange use
Blind flange have the function of isolation and cutting, same as head, pipe caps and welded plug. Because of its good sealing performance, it is generally used as a reliable isolation method for systems requiring complete isolation. A plate blind flange is a solid circle with a handle, which is used in a system that is normally in a state of isolation. and 8 words Blind board, shape like words 8, one end is blind board, the other end is throttle ring, but the diameter and the pipe diameter is the same, does not play a role in throttling. 8-word Blind board, easy to use, whenever need to isolate, use blind flange; Whenever need normal operation, use throttle ring, but also can be used to fill the pipe on the blind plate installation gap. Another feature is obvious, easy to identify installation status.
Blind flange used in the oil medium system is not galvanized, used in other media systems should be hot galvanized, minimum dip zinc layer weight 610g/m2, hot-dip zinc quality inspection press cb*/z343.