GLEN Flange supplies high quality and durable gost (гост) 12820-80 flanges to shipbuilding and offshore industry, also accepting customized orders. As a professional gost (гост) 12820-80 flanges suppliers in China, our factory and manufacturer have been approved by LR, DNV-GL, ABS, BV and KR to guarantee quality meeting marine level. Please be free to get the price list and quotation with us.