NACE LogoSSPC LogoAdvanced Applicators, LLC has the experience and background necessary to provide your company technical specifications for most types of surface preparations and coatings.  Having had a full 3 generations worth of experience in this line of work (started with my dad in 1938), we can and do provide very exact and on target specifications upon request for all work we will be bidding on.  These specifications will follow both paint/coating manufactures specifications, SSPC/NACE surface preparation specifications and our own proven job experience requirements.

Like the rest of this website, these Technical Specifications Pages are here to help you decide what will best suit your needs.  In that regard, we have provided our “Surface Preparations Specifications for Carbon Steel” as well as a “Sandblast Color Chart“.  Using these 2 tools, you may well be able to decide if sandblasting is what you’re looking for, or perhaps another surface preparation would be more appropriate for your needs.

Sandblasting Color ChartSandblasting preparation to carbon steel is usually done following  written specifications.  These specifications generally follow the very specific specifications developed by the Structural Steel Painting Council (SSPC) and The National Association of Corrosion Engineers (NACE).  Both organizations  have  provided complete specifications for sandblasting as well as other types of surface preparations to carbon steel.  Click on the “Sandblasting Color Chart” on the left, for a visual representation of the SSPC specifications for sandblasting carbon steel.

Although the complete specifications are copyrighted works, we can provide suitable “workalike” specification here to help you better understand the nature of metal cleaning and surface preparations to steel.  Following is a list of those specifications:

SURFACE PREPARATION SPECIFICATIONS FOR CARBON STEEL

The surface preparation required for different types of coating systems to be applied over carbon steel will vary considerably depending on the type of coating as well as the service environment. The Steel Structures Painting Council, the National Association of Corrosion Engineers, the American Water Works Association and the American Society for Testing and Materials all make reference to various standards that define degrees and methods of surface preparation. The most widely used surface preparation specifications are those published in Steel Structures Painting Manual, Vol. 2, Systems and Specifications. Given below is a brief description of the various SSPC Surface Preparation Specifications, endorsed by the National Association of Corrosion Engineers (NACE) where indicated. It is recommended that you refer to the SSPC Manual for the complete text of the specifications:

SSPC-SP1 Solvent Cleaning

The removal of all visible oil, grease, soil, drawing and cutting compounds and other soluble contaminants from surfaces with solvents or commercial cleaners using various methods of cleaning such as wiping, dipping, steam cleaning or vapor degreasing. It is generally conceded that solvent wiping will not positively remove all oil and grease from the surface, therefore a more efficient cleaning method such as vapor degreasing or steam cleaning should be employed where coatings will not tolerate any oil or grease residue.  Oil and grease removal by solvent cleaning is included in all other SSPC Surface Preparation Specifications; it is not necessary to cite SSPC-SP1 separately when these other specifications are used.

SSPC-SP2 Hand Tool Cleaning

The removal of all loose mill scale, loose rust, loose paint and other loose detrimental foreign matter by the use of non-power hand tools. Hand tool cleaning will not remove adherent mill scale, rust and paint. Mill scale, rust and paint are considered adherent if they cannot be removed by lifting with a dull putty knife.

SSPC-SP3 Power Tool Cleaning

The removal of all loose mill scale, loose rust, loose paint and other loose detrimental foreign matter by the use of power-assisted hand tools. Power tool cleaning will not remove adherent mill scale, rust and paint. Mill scale, rust and paint are considered adherent if they cannot be removed by lifting with a dull putty knife. Power Tool Cleaning provides a slightly higher degree of cleanliness than Hand Tool Cleaning, but is not regarded as adequate surface preparation for long term exterior exposure of most high-performance coating systems.

SSPC-SP5 or NACE 1 White Metal Blast Cleaning

The complete removal of all visible oil, grease, dirt, dust, milt scale, rust, paint, oxides, corrosion products and other foreign matter by compressed air nozzle blasting, centrifugal wheels or other specified method.

SSPC-SP6 or NACE 3 Commercial Blast Cleaning

The removal of all visible oil, grease, dirt, dust, mill scale, rust, paint, oxides, corrosion products and other foreign matter by compressed air nozzle blasting, centrifugal wheels or other specified method. Discoloration caused by certain stains shall be limited to no more than 33 percent of each square inch of surface area.

SSPC-SP7 or NACE 4 Brush-Off Blast Cleaning

The removal of all visible oil, grease, dirt, dust, loose mill scale, loose rust, and loose paint by compressed air nozzle blasting, centrifugal wheels or other specific method. Tightly adherent mill scale, rust and paint may remain on the surface. Mill scale, rust and paint are considered tightly adherent if they cannot be removed by lifting with a dull putty knife.

SSPC-SP8 Pickling

The complete removal of all rust, mill scale and foreign matter by chemical reaction or electrolysis in acid solutions. The degree of cleanliness is similar to SP5 White Metal Blast Cleaning.


SSPC-SP1O or NACE 2 Near-White Metal Blast Cleaning

The removal of all visible oil, grease, dirt, dust, mill scale, rust, paint, oxides, corrosion products and other foreign matter by compressed air nozzle blasting, centrifugal wheels or other specified method. Discoloration caused by certain stains shall be limited to no more than 5 percent of each square inch of surf ace area.


SSPC-SP11 Power Tool Cleaning to Bare Metal

The removal of all visible oil, grease, dirt, mill scale, rust, paint, oxide, corrosion products, and other foreign matter. Slight residues of rust and paint may be left in the lower portion of pits if the original surface is pitted. Differs from SSPC-SP3 in that it requires more thorough cleaning and a surface profile not less than 1 mil (25 microns). For areas where abrasive blasting is prohibited or not feasible.

Degree of Cleanliness vs. Coating Performance

Abrasive blast cleaning, as defined in SSPC Specifications SP5, SP6 and SP1O, is often regarded as the preferred method of surface preparation for carbon steel. Experience has proven that a given coating system, applied over a properly blast-cleaned or pickled surface, will cost less per square foot per year than the same system applied over Hand or Power Tool Cleaned surfaces.