... : DN15to600 Material: carbon steel Pressure: pn6,10,16,25,40 UNI 2280/1/2/3/4 1.Sizes: DN15 to DN600 ... ,JIS,DIN,BS4504,SABS1123,EN1092,UNI,GOST12820-804.Types: plate, slip on, welding neck, blind, thread, socket weld flange5.Process: free forging ... , please don't hesitate to contact me for flange price uni steel flange blind