... 4. High in Quality Gost12820-80 and Gost12821-80 Forged Carbon Steel Flange 1. Standards:ANSI,JIS,DIN,BS4504,SABS1123,EN1092-1 ... .Supply Capacity:12,000/year Gost12820 and Gost12821-80 Forged Carbon Steel FlangeMaterial: Q235 16MnPayment Terms: 15% prepayment and the balance will ... Forging Co.,ltd will always be your best partner in pipe flanges business. Welcome to contact and visit us for now ...