The grades of duplex stainless steel American standard flange ball valves in China are called 2205, S31803, F51 (forged steel), 1.4462. This material of ball valve has high mechanical performance and corrosion resistance. The valve can choose the American standard Class 150LB flange standard face-to-face length, and adopts flange connection. The valve body material is stainless steel 304 (CF8), 316L (CF3M), and the valve seat can choose PTFE, PPL, etc., belonging to a type of floating ball valve.
