high pressure flang Size: from 1/2 to 200 inch (DN15-DN6000) ... , BS, JIS, EN, JB, GB, HG, UNI, API CS,SS... high pressure flang Technics: Forged Size: from 1/2 to 200 inch ... Flange, Lwnrf (Ff), Thrf (Ff) Facing Method: rust preventing oil, spray paint (black, yellow), hot galvanization, cold galvanization or colored electroplate ...