... flange,SW flange and Threaded flangeSize1/2'' ~240 (DN15~DN600)Pressure class150-2500lbsMaterialcarbon steel, A694 F42, F46, F48, F50, F52, F56 ... Plate, Slip-On, Welding-Neck, Blind Flanges; BS4504 / EN1092-1 / TABLE-E FLANGES: PN10, PN16, PN25, PN40 Flanges;JIS B2220 / KS ... and active inquiry. Thank you and Best regardsContact us: high pressure resistant welding dn200 carbon steel flange