The tank, made entirely of steel, has a working table made of galvanized blades for the Waterjet cutting, on which the material to be processed is placed. The table is easily removable, simplifying cleaning operations. Maintenance and cleaning are facilitated by the fact that it is possible to remove the blade table in one step. The tank is galvanized and painted on the outside to ensure greater corrosion resistance. In addition, the tank is equipped with adjustable feet and the connections for the draining system.