... type SO WN PL TH SW Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS Material: A105,Q235, WCB, CF8 ... ,DIN 2527,DIN 2630~2637,DIN 2641~2642Japan:JIS B2220-2004,JIS F7806-1996,JIS B2291-1994Shipbuilding:CB1001-81,CBM1013-81,CBM1018-81 ... die forging from round bar,CNC machining,Drilling and Passivating high quality Stainless steel flange, 150~1500class