... 412F, SK6L146,TT46, TB56, TS116, CHD101All Chinese size can be provided, and the special size can be ordered.Size avillableof Q series ... minimum. The optimum diamond size, concentration and matrix type are dependent on the hardness and abrasiveness of the formation to be ... shale, soft sand, peat, rock, mudstone, tuff,Hard marl, marl and other hard sandy clay Flat Bottomed Type, Arc-shaped, Steps ...