... 3,Standard: ANSI,DIN,BS e Pipie Joint/ Ring joint face flange Production standard: GB/T9112~9124-2000 JB/T81- ... Flanges, Blind Flanges, Orifice Flanges, Lap Joint Flanges, Ring Joint Flanges, Long Welding Neck Flanges, Figure 8 Blanks Stainless ... Class: 150LB 300LB 600LB 900LB 1500LB 2500LB Classification of type: 1,PL SO WN SW TH PJ/RJ PJ ... or as customer’s request. Pipie Joint/ Ring joint face flange