1) Standard: ANSI, BS, JIS, UNI, etc 2) Material: 304, 316, 304L, 316L, 321, etc. 3) Types: SO, WN, LWN, SW, Rh, BL, etc ITERMSDESCRIPTIONFlang Typeblind flangesSizeDN10-DN500PressurePN2.5-PN320Seal SurfaceRF, FM/M, T/G, FF, RJFeatureGood strength, tightness and stiffness, high temperature and alternating bending resistanceStandardHG20615, HG20624, HG20625, HG20626, HG20634, HG20635Application ...