High-pressure cleaning machine is a high-pressure water jet cleaning technology that uses water as a medium to generate multiple high-pressure water jets with different angles and strengths through a special adjustable pressure system. These water jets have high impact and stripping abilities, and can remove the structures, metal oxides, and other attachments on the inner walls of pipes. It is widely used in dredging, cleaning, and maintenance of sewage pipes, rainwater pipes, water supply pipes, heat exchangers, condensers, and heating pipes. In practical applications, pressure of the water outlet can be adjusted according to the type of pipe material, size of pipe diameter, and degree of pipe blockage, in order to achieve the most ideal cleaning effect without damaging the pipes. This method is much faster than manual cleaning, and does not require any chemical agents, solvents, or corrosives, making it cleaner and more environmentally friendly. Its excellent performance and good cleaning effect have been widely favored by users.