Provide ANSI B16.5 series forged flange: welding neck, blind, slip on and so on. ANSI B16.5 welding neck flangeN15 to DN1200, 1 ... steelStandard: ANSI,JIS,DIN,BS4504,SABS1123,EN1092,UNI,GOST12820-80Types: plate, slip on, welding neck, blind, thread, socket weld flangeProcess: free forging ... of high-quality forging, machining, assembly, inspection, packaging production forged welding neck flange