... ) Unit weight 0.10kg-120kg/pc 4) Various grade grey iron sand casting feature- TS 16949 certified- 3 sets automatic moulding lines, flask ... : GG15, GG20, GG23, GG25, GG30- Nodular/Ductile cast iron types: GGG40, GGG40.3, GGG50, GGG60, GGG70, GGG70, GGG80, GGG90sand casting Sand Casting (Grey iron / Ductile iron casting)