1, size: 1/2"-48" 2, material: SS316, SS304 etc. 3, working pressure: ... EN1092-1, HG, UNI, JIS, NFE, GB, BS... 2. Material: 1.4301, 1.4307, 1.4401, 1.4404, ... in accordance with ANSI B 16.5 from 1/2" to 24" and classes 150 to 2500 ( ... complete range).Flanges from 26" to 48" and classes 150 to 900 lbs are in ... classes 150 to 2500 lbs and sizes from 1/2" to 24".Orifice flanges from 1" to 24 ...