High-pressure water jet cleaning technology for heat exchangers. This involves pressurizing ordinary tap water through a high-pressure pump to reach pressures of 500-1500 bar, which is then emitted through specialized nozzles (with orifices only 1-2 mm in diameter) at high velocities (200-500 meters per second), resulting in a highly dispersed multi-stream of energy. These individual streams of water possess evenly dispersed impact energy (similar to the principle of macro-ultrasound), causing no damage to the tank walls. They effectively remove salts, alkalis, scale, and various obstructions from the inner walls of pipes. Cleaning using this powerful stream of water is known as high-pressure water jet cleaning. Tube-type heat exchangers typically have internal diameters of Φ10-50 mm and lengths of around 3, 6, 9, or 13 meters. We use rigid and flexible hoses with various nozzle tips resembling drill bits to悬浮 within the tubes and strike the scale deposits, shattering them and allowing them to be flushed out with the water. This results in an efficient cleaning of both the inner and outer surfaces of the tubes, with a cleaning effectiveness of over 90%.