... Name: carbon steel flange &forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM A182- F304 F304L, F316,F316L,F321 ... ANSI 150LBS - 2500LBS DIN PN6 - PN160 JIS 5K - 30K HG PN0.25 - PN25 PN2.0 - PN42.04)Specification: from 1/2" ... All the flanges are according to the ASTM, BS, DIN, JIS, EN, GB and customer's request.Ding ... 7 standards, i.e. ANSI ,API ,MSS ,AWWA , DIN ,JIS ,BS as well as GB ,which size 1/ ...