... Welding Neck Flange1.specificationStandards: ANSI(ASME), AWWA, DIN, EN1092, GOST, JIS, BS, UNI, SABSType: welding neck, slip on, bind, threaded, lap ... ,32,33,34,35 NFE29204 BF 42 BF42NBF48 BF48N 13 JIS B2220 STANDARD 10A-1500A PN5K,10K,16K,20K,30K SOP ... ) SOH(SO A B C ) WN JIS G3101 SS41 JIS G3201 SF40A(S20C) AND SF45A(S25C) JIS G3202 SFVC1AND SFVC 2A 14 DIN ...