We are a Chinese flange manufacturing company. Quality certification : the ISO9001 Certification System and the TUV Certificate . Standards: ANSI, JIS, AWWA , DIN, BS4504, BS10 Material : S235JRG2 (RST37-2), P250GH (C22.8 ) , ASTM A105. 304L.306L Criterion: Plate flanges, Blind flanges, Slip-On handles, Welded Necks, Welded sockets, and Threads, with various specifications from 1/2" to 48". The materials can be carbon steel and stainless steel. These products are selling well in Japan, Korea, Canada, America and Europe. Furthermore, we produce special flanges according to customers&＃039; requirements.