Forging Flange Size: from 1/2 to 200 inch (DN15-DN6000) ... , JIS, EN, JB, GB, HG, UNI, API CS, SS, etc Forging Flange Materials: Carbon Steel, Stainless Steel, Alloy Steel Technics: Forged ... , such as oil, petroleum, gas, chemical industry, nuclear power station, water and nuclear power construction, shipbuilding, food manufacturing, construction, shipbuilding, paper making ...