... ,JIS,UNI 3)Size:DN15-DN10 BS Weld Neck Flange (JT-F026)1.specificationStandards: ANSI(ASME), AWWA, DIN, EN1092, GOST, JIS ... ,20,25,40,50,110,150,260,420 TYPE01,02,03,04,05,11,12,13,14,15,21,32,33 ... ,20,25,40,50,100,150,250,420 TYPE01,02,03,04,05,11,12,13,14,15,21,32,33 ... 1.4541 1.4571/DIN174402.picture BS Weld Neck Flange (JT-F026)