Industrial sandblasting and painting


An on-going evolution in the field of anti-corrosive coatings, the development of new surface preparation and application methods in addition to the limitations imposed by environmental considerations have brought about substantial changes in the types of procedures currently in use which may be summarized as follows:

Dry Sandblasting. Siliceous abrasives which produced high dust levels have been replaced by harder, specific abrasives with reduced dust levels and calibrated granulometry systems according to the degree of required roughness necessary for subsequent coatings of paint.
Vapor Sandblasting. Mixed action abrasive and water jets at a pressure of atm guarantees dust-free, environmentally friendly results.
Hydro-Sandblasting. combines the mechanical action of the abrasive, the hydrodynamic action of high pressure water (250-300 atm) and assures environmentally friendly, high standards of cleanliness.
High and Ultra-high pressure Waterjetting. . An innovative technology in surface preparation which removes corrosion and poorly adhering residue of previous coatings by high pressure (700 – 1700 bar) or ultra-high pressure (1700 – 2500 bar) waterjetting with no dust formation. Surfaces treated in this manner provide an excellent adhesion base for successive coats of paint to be applied. The degree of required preparation for any given surface is detailed in Regulation SSPC-SP12/NACE n.5.
Accustrip Sodium Bicarbonate Blast Media. . A smoke and spark-free, low-pressure bicarbonate and water crystal blasting system which allows cleaning and de-painting jobs to be done with the plant and equipment still in operation. Poorly adhering layers of old paint and rust can be eliminated from virtually any surface without any damage or abrasion.

Surface treatment of metals to harden the surface. This system was developed for the treatment of turbines in the CTE (rotors and stators), and is performed with analytical controls of Almen degrees and roughness etched according to the UNI-5394-72.


Paint can applied by the traditional roller or brush methods or by high-pressure spray system. High-solid, solvent-free products can be applied to both large and small surfaces. This drastically reduces the number of required coats which not only reduces applications costs but also signified that solvent emissions are reduced to a minimum.


Specialized applications of epoxy two-component lining up to 1500 microns of reservoir funds, are made using hot airless Bimixer type, in total absence of solvent.
Primer, zinc primer, intermediate, finishing products, special products in different types for a wide range of performance and resistance in industrial applications, are used in the application cycles by Rendelin S.p.A..

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