... green sand casting) Four casting process for choice, green sand casting, resin sand casting, shell casting and lost foam casting, The difference ... to your technical requirement. Tol. GradeRoughnessMaterialgreen sand casting CT10~12Ra12.5~25#Aluminium Alloy(A356, A386 ... #Vermicular iron, #Carbon Steel,Alloy Stee#Copper AlloyProcessSand Casting, Shot Blasting, Heat treatment, Machining, Surface treatment ...