... 2.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 ... /1.4306DIN 17440/1.4401 DIN 17440/1.4404 316Ti, SS304, SS316, SS304L, SS316L , 321 etcAlloy Steel DIN17440/1.4006 DIN ...