... WN flanges Standard: ASTM A182,ANSI B16.5 OR DIN SERIES Types:WN, SO, BL, Plate, Thread, Socket and etc ... to DN30003Materialcarbon steel, stainless steel and alloy steel4StandardANSI, DIN, EN1092-1, NFE, AS, JIS and customers' drawings for special5TypesWN, SO ... , BL, Plate, Thread, Socket and etc6Processfree forging, plate cutting7Packingin wooden cases, wooden pallets or ...