For the application in the industry of Oil, Petro-chemical etc. Available material can be: WCB, WCC, LCB, CF8, CF8M, CF3, CF3M, ... , Duplex stainless steel (4A), Super duplex stainless steel (5A);Design and manufacture as per ASME B16.34, BS1868, API 6D;End ... .34;Pressure test as per API 598 Full bore Swing check valve