weld-neck flanges Dimension to ANSI B16.5,BS4504,DIN,JIN,UNI,ets Size from 1/2"to24" Material : SS316/316L SS304/304L, welding neck. blind, socket, lap-joint, orifice FlangesDimension to ANSI B16.5,BS4504,DIN,JIN,UNI,etsSize from 1/2"to24"Material : SS304,SS 316, ASTM A105 ST37-2,C22.8 Q235, ets