Machines for washing and cleaning pipework, sewerage networks and ducting using high-pressure water technologies; machines for washing pipework and ducting with extraction by suction of solid material and separation of sludges; pressure washing machines; machines for the extraction by suction of liquid and muddy wastes; machines for the extraction by suction of liquid and muddy wastes with washing with water under high pressure; machines for the extraction by suction of heavy powders, solids ...