... DIN, BS, JIS, EN, JB, GB, HG, UNI, API water piping flang Technics: Forged Size: from 1/2 to 200 ... , yellow), hot galvanization, cold galvanization or colored electroplate, powder coating and so on. Types Of Jointing Faces: raised face ... as oil, petroleum, gas, chemical industry, nuclear power station, water and nuclear power construction, shipbuilding, food manufacturing, construction, shipbuilding, ...