... Coating 4.Deep Carburized Wear Surface Name: Mud Pump Valve BodyFull Open Plate TypeMaterial: Alloy Steel, Ductile Iron, ... Grey IronFinishing: EPD CoatingDeep Carburized Wear SurfaceHeavy-duty valve designNo weldingDimensions and tolerances per ANSI Y14.51.These ... ), Permanent Casting, Die Casting, Centrifugal Casting etc.3) Machining Types: Machined by Round Bar, Drilling, Milling, Turning, Boring, ...