water piping flangpipe flang Size: from 1/2 to 200 inch ( ... : ANSI, DIN, BS, JIS, EN, JB, GB, HG, UNI, API water piping flang Technics: Forged Size: from 1/2 to 200 ... , such as oil, petroleum, gas, chemical industry, nuclear power station, water and nuclear power construction, shipbuilding, food manufacturing, construction, shipbuilding, paper ...