... .150LB 300LB 600LB 900LB 150 3.SLIP-ON WELD NECK BLIND THREAD 1)Name: carbon steel flange &forged flanges2)Materials : ASTM ... ,F321 ,ASTM A350 ,ASTM A181, Q235, 20#, 20Mn ,16Mn, CH2.8, C22.83)Rating : ANSI 150LBS - 2500LBS DIN PN6 - PN160 JIS ... , SP-44, AWWA, API, DIN, JIS, HG, GB, JG, BS.8)All the flanges are according to the ASTM, BS, DIN ...