... DIN, UNI, BS, AS Material: A105,Q235, WCB, CF8, 314.316 Type:Slip On Flange, Welding Neck Flange, Socket Welding Flange, Threaded Flange, Lap Joint Flange, Blind Flange ... 2005),GB/T10746-1989,GB/T4450-1989Germany:DIN 2573~2576,DIN 2527,DIN 2630~2637,DIN 2641~2642Japan:JIS B2220-2004,JIS ... forging from round bar,CNC machining,Drilling and Passivating high quality Stainless steel flange, 150~1500class