The meaning of 32 in the 32-tooth saw system is suitable for cutting hard materials. According to relevant published data, the thickness of saw blade can be divided into three types: coarse teeth, medium teeth and fine teeth, which are expressed by the number of teeth per 25mm length on the saw blade, among which 14~ 18 teeth are coarse teeth, 24 teeth are medium teeth and 32 teeth are fine teeth. The thickness of the saw blade should be selected according to the hardness and thickness of the processing material.