1, material: SS304, SS316, Q235, A105 2, standard: ANSI, JIS, DIN, GB 3, size: 1/2"-48" 4, pressure: class150-3000 ... 1. Standard: DIN, ANSI/ASME B16.5, GOST, EN1092-1, HG, UNI, JIS, NFE ... , BL, PL... 4. Face type: RF, FF, RTJ... Stainless steel flange