Hydro-blasting is the method of cleaning the surfaces of various materials (eg steel, stone, cement, plastic and wood) through the jet of water from a special tool (gun) with extreme pressure. This process provides an excellent bonding surface for material repair and new coating applications. Moreover, it relies entirely on the energy of water striking on a surface to achieve its cleaning effect with no abrasive materials being involved. Consequently, with the problems of dust pollution and disposal of abrasives eliminated we have an environment-friendly alternative of sand-blasting.

Depending on the pressure ranges utilized, hydro-blasting is distinguished in four main categories:

1. Low Pressure Water Cleaning-LPWC
The low-pressure water cleaning (or washing down) refers to water pressures less than 340 bar (<5000 psi) and its aim is the removal of marine organisms and loose pieces of rust or paint, dirt and salt before applying the main cleaning process. It is not considered to be a method of preparation, but a surface pre-preparation before the main cleaning method is applied.

2. High Pressure Water Cleaning – HPWC
The high-pressure water cleaning refers to water pressures between 340 -680 bar (5000 – 10000 psi). With these pressures loose rust and paint in the hollows of the surface can be removed, but cannot achieve a uniform matte appearance.
Its applications are:

  • Removal of marine organisms from the hulls, which are not removed by low-pressure water jetting.
  • Selectively removal of layers of paint.
  • Light cleaning of rust and paint.

3. High Pressure Water Jetting – HPWJ
The high-pressure water jetting refers to water pressures between 680 -1700 bar (10000 – 25000 psi). In practice, the high-pressure water jetting can perform most tasks of cleaning and preparation of surfaces encountered in ship-repairing, ship-building or industrial environments. Its performance might not adequate only when some very difficult paints or calamine are encountered, where it is necessary to go for an even higher pressure.

4. Ultra HighPressureWater Jetting–UHPWJ
The ultra-high pressure water jetting refers to water pressures above 1700 and up to 3000 bar (25000 – 43500 psi). Some of the latest marine coatings require a surface preparation up to this level. Our company’s latest technology equipment covers this service both via guns/operators and spider machines.

CORAL CORROSION CONTROL is the leader in hydroblasting cleaning method at the local market utilizing its advanced equipment and long experience strictly following the international standards…


Our UHP deck blasting system uses innovative technology to completely remove all paint and other stubborn surface materials from any deck of your vessel or industrial place. Our special equipment is quiet, safe and capable of use at any project, getting your vessel back into service sooner. Having a special connection where a hydro-blasting nozzle up to 2500bar can be fitted, the highest quality result is always guaranteed to our customers.


Our Spiderjet machines offered for Ultra High Pressure Water Jetting attach to the work surface by vacuum sucking off all waste material and water removed during the process leaving the ultimate surface for coating application!