Socket-welding flange 1,Material: Stainless Steel, Carbon Steel, ... From1/8" to 64" 3,Standard: BS,DIN etc Socket-welding flange Production standard: GB/T9112~9124-2000 JB/T81 ... Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, Lap Joint Flanges, Ring Joint Flanges, Long Welding Neck Flanges, ... film steel cases or as customer’s request. Socket-welding flange