... ,JIS,UNI 3)Size:DN15-DN10 BS Weld Neck Flange (JT-F026)1.specificationStandards: ANSI(ASME), AWWA, DIN, EN1092, GOST, JIS ... ,420 TYPE01,02,03,04,05,11,12,13,14,15,21,32,33,34 ISO2604-1 F8 F9 F13 F18 ... ,420 TYPE01,02,03,04,05,11,12,13,14,15,21,32,33,34,35 NFE29204 BF 42 BF42NBF48 BF48N ... 1.4541 1.4571/DIN174402.picture BS Weld Neck Flange (JT-F026)