... &forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM A182- F304 F304L, F316,F316L,F321 ,ASTM A350 ,ASTM A181, Q235, 20#, ... 20Mn ,16Mn, CH2.8, C22.83)Rating : ANSI 150LBS - 2500LBS DIN PN6 ... All the flanges are according to the ASTM, BS, DIN, JIS, EN, GB and customer's request.Ding Xiang ... , i.e. ANSI ,API ,MSS ,AWWA , DIN ,JIS ,BS as well as GB ,which size ...