Plate flat welding flange usually refers to the surrounding open in a similar disk-shaped metal body on several fixed hole, often used in connection with other things. Flanges are used in pairs, the bolts will be connected to the two flanges. industrial flange points threaded connection (wire connected) flange and welded flange our plate welded flange the ASME B16.5 plate welded flange, ASME B16.47 plate welded flange, DIN 2634 Plate flat welding smash convenient DIN 2635 plate welded flange, DIN 2630 plate flat welding flange, DIN 2636 plate welded flange, DIN 2637 plate welded flange, DIN 2632 plate flat welding flange the flange drawn manufacturing simple, low-cost, widely used size plate welded flange: 3/8 "to 100" DN10 to DN2500 pressure the United States Series: CLASS 150, CLASS 300, CLASS 400, CLASS 600, CLASS 900, CLASS 1500, CLASS 2500 European Series: PN 2.5, PN 6, PN 10, PN 16, a PN 25, a PN 40, the PN 63, a PN 100, the PN 160, the PN 250, a PN 320 and PN 400 flange sealing surface type America series: plane (FF), raised face (RF), (G), groove surface uneven surfaces (MFM), ring joint face (RJ)