... 3. Promote Delivery 4. High in Quality Gost12820-80 and Gost12821-80 Forged Carbon Steel Flange 1. Standards:ANSI,JIS,DIN ... ,BS4504,SABS1123,EN1092-1, UNI,AS2129,GOST-128202. Type:Plate ... PN6 DN10---DN1600PN10 DN10---DN1600PN16 DN10---DN1200PN25 DN10--DN800Gost12821-80 Welding Neck Flange PN6 DN10---DN1200PN10 DN10---DN1200PN16 DN10--- ...