It is certain that the cutting quality of water cutting is good, but in terms of equipment investment and maintenance cost, it is more cost-effective to use flame. Using semi-automatic cutting machine or numerical control cutting machine to cut plates has good cutting quality, less investment and low cost. The water cutting technology is still immature, and the emery in its jet has serious wear on pipes and nozzles, and its stability is not high, so the natural maintenance cost is much higher than that of flame cutting. The speed of water cutting is also very slow, and the work efficiency is terrible. It's less than half the speed of a flame. It depends on the equipment. In terms of cutting accuracy, water cutting is dominant. If the flame cutting error of cutting large parts can be controlled at 1MM, small parts will depend on experience, especially narrow strips, and the thermal deformation is quite intense. If there is no special need, flame cutting can meet most of the requirements of plate cutting. You can also consider using fine plasma CNC cutting machine, the working efficiency is n times that of flame and water cutting, which is more suitable for factory blanking.