... ISO9001 certificate ,PED and AD2000-W0 certificate 3)ASTM A105 ,RST37.2,S235 JR G2 All the ... forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM A182- F304 F304L, F316,F316L,F321 ,ASTM A350 ,ASTM A181, S235 JR ... G2, 20#, 20Mn ,16Mn, CH2.8, C22.83)Rating : ANSI 150LBS - 2500LBS DIN ... .8)All the flanges are according to the ASTM, BS, DIN, JIS, EN, GB and customer's request ...