... .Welding Neck,Loose,Flat,Blind.Threaded Flange 3.2000psi-15000psi 4.API6A Type B Flange Size1/2"-72"TypeWeld Neck, Slip ... -On, Blind, Socket Weld, Lap Joint, Threaded, Orifice Flange, Swivel Flange, Spectacle Blind,Etc.StandardANSI, ASME ,MSS, API, DIN, JIS ... , Incoloy 825/800Cu-Ni90/10,70/30ProcessFree forging, plate cutting.PrintingCarbon steel and alloy steel with yellow print, black print ...