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Blind flange (blind flange) also called blind, to name called the flange cover. Is a kind of flange without holes intermediately used as a plug for sealed pipes. Has a variety of type for surface sealing form. such as: Flat fact(FF),convex(MF),concave(FM)and tongue(T)surface,Raised face (RF) and groove face, ring joint face. Carbon steel Blind flange is the flange made of cs meterials.
Such as Q235, 20#,A105 etc.