... various castings (cast iron) of pulleys & sheaves as per customers' drawings & samples. FEATURES TO Cast Iron,CASTINGS OF PULLEYS ... & SHEAVES. 1.Material & Standard:grey iron(GG20,GG25,GG30),ductile iron(GGG40, ... weight range: For grey iron casting: up to 5000kgs; For ductile iron casting:up to 3500kgs ... pump body,big ring gear,bolster,frame,rear frame,front frame, ...