Pneumatic slurry knife gate valve Ductile Iron- Gr. 60-40-18, 65-45 ... steel: HD,HH,Hk,HXGray and Ductile iron casting*Green sand*Dry sand*Investment sand*spin castingCommon Alloys ... Iron-Gr,60-40-18,54-45-12Aluminum Casting*Dry sand*Permanent Mold*Die cast*Investment sandCommon ... produced are:Aluminum-319,C355,A356,A357,A380Bronze&Brass casting*Green sand*Dry sand*Investment sand*Spin castingCommon ...