Method: Lost Foam Casting
Material: Ductile Iron Casting, Gray Iron Casting
We use lost foam casting method to get more valve body and fittings. If the annual quantity is very big, the lost foam casting is the best method, which only left little machining position and save much cost. You only machine the contact surface betwen disc and body, other are casting surface finish.
If you want to get more information, pls contact casting quality.