... TypesSlip-On, Welding Neck flange, Blind flange, Socket Welding flange, Threaded flange, Lap Joint flange and Plate flange, Orifice flange, Ring joint flange, Screwed Boss Flange, etc. Applicable standard ... , 300, 600, 900, 1500 and 2500PN 6, PN 10, PN16, PN25, PN40 and PN64Applications rangeoil industry,chemical industry, water conservancy, electric ...