... stainless steel:S31500,S31803(2205),S32304,S32205,S32760,S32750,HDRCopper Nickel Alloy:B10,B30Special steel:N06600,N08800,N08811,Titanium alloy, Alloy ... die forging from round bar,CNC machining,Drilling and Passivating high quality Stainless steel flange, 150~1500class