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 ... face; ring joint face; tongue and groove face; male and female face; lapped joint; flat face; threaded Connection: Welding Varieties: Threaded ...