... have more than ten years experience in this industry specially for mining machinery Material:Carbon steel,low alloy steel:ZG20SiMn,ZG50Mn,ZG35SiMn ... in the area of cement mill,rotary kiln,shipbuilding,metallurgy,mine,sugar mill,powder plant,rail road,engine bed and so ... .0625 - 0.25 in. (0.16 - 0.64 mm) to part dimensions to allow for machining to obtain a smooth surface.