... . slip-on, welding neck, threaded, socket weld, lap-joint flange, blind flange Forged flanges 1.flange Material:carbon steel ,stainless steel2.Standards:ASME,ANSI ... ,UNI,BS ect3.Flange varieties:plate flange.slip-on flange,welding neck flange,threaded flange,socket weld flange,lap-joint flange, blind flange, spectacle-blind flange4.flange Size:1/2 ...