Flange covers, also known as the blind flange without holes in the middle of the flange, for sealed pipe plugs with our production ASME B16.5 flange cover, ASME B16.47 flange cover, DIN 2634 flange cover, DIN 2635 flange cover, DIN 2630 flange cover, DIN 2636 flange covers and other forms the sealing surface of the flange cover more types of flat, convex, concave and convex surfaces, tongue and groove face, ring joint face dimensions Law Linguet: 3/8 "to 100" DN10 to DN2500 pressure the United States Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500 European Series: PN 2.5, PN 6, PN 10, PN 16, a PN 25, PN 40, the PN 63, a PN 100 and PN 160, PN 250, a PN 320 and PN 400 flange sealing surface type US Series: plane (FF), the projection surface (RF), the groove surface (G), bump surface (MFM), ring joint face (RJ)