rectangular cover flang Size: from 1/2 to 200 inch (DN15-DN6000) ... , JIS, EN, JB, GB, HG, UNI, API CS,SS rectangular cover flang Technics: Forged Size: from 1/2 to 200 inch ... industry, nuclear power station, water and nuclear power construction, shipbuilding, food manufacturing, construction, shipbuilding, paper making, medicine, and other industries. Main ...