1)carbon steel forged blind flange 2)ASTM A105 ,DIN ST37.2,Q235 ,20#,20Mn ,16Mn ... flange &forged flanges2)Materials : ASTM A105,DIN ST37.2, ASTM A182- F304 F304L, F316,F316L,F321 ,ASTM A350 ,ASTM A181, S235 JRG2, 20#, ... JG, BS.8)All the flanges are according to the ASTM, BS, DIN, JIS, EN, GB and customer's ... &processing machinery packing(3)Certifications Carbon steel forged ASTM A105 Blind flange