... . High in Quality Gost12820-80 and Gost12821-80 Forged Carbon Steel Flange 1. Standards:ANSI,JIS,DIN,BS4504,SABS1123, ... Supply Capacity:12,000/year Gost12820 and Gost12821-80 Forged Carbon Steel FlangeMaterial: Q235 16MnPayment Terms: 15% prepayment and the ... of production and Sales, Haoyang Flanges are offering highquality forged steel flanges in wide applications for Water works, Shipbuilding industry ...