... ~~DN3600 Stainless steel flange STANDARD: ANSI, ASA, and AWWA standards, in addition to the DIN 2527, 2573, 2576, 2642, 2633, and 2636, ... welded sockets, and threads, with various specifications from 1/2" to 48". TUV and ISO 9001 certificatesSALES MARKET: Japan, Korea, ... as Customer requirements.If you are interested in our products, please don't hesitate to contact us. stock stainless steel flange