... ,316,316L,carbon steel 1, Standard: ANSI, DIN, JIS, BS2, Size: DN15(1/2") to DN5000(200")3, Material: 304, 304L, 316 ... , 316L, carbon steel or other material on request 4, Technics ... Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Other Flanges High quality stainless steel welding neck flange ANSI B16.5