... " 3,Standard: ANSI,DIN,BS e Pipie Joint/ Ring joint face flange Production standard: GB/T9112~9124-2000 JB/T81-94 ... WPBTypes: Welding Neck Flanges, Slip on Flanges, Threaded Flanges, Socket Welding Flanges, Blind Flanges, Orifice Flanges, Lap Joint Flanges, Ring Joint Flanges, Long Welding Neck Flanges, Figure 8 Blanks ... cases or as customer’s request. Pipie Joint/ Ring joint face flange