SSPC is the Society for Protective Coatings for more information about SSPC visit their WEB site.
www.sspc.org
NACE  is the National Association of Corrosion Engineers visit their WEB site.
www.nace.org.

                                      
Surface Preparation Standards:
• SSPC-SP-1 Solvent Cleaning
Removal of all detrimental foreign matter such as oil, grease, dirt, soil, salts, drawing and cutting
compounds, and other contaminants from steel surfaces by the use of solvents, emulsions,
cleaning compounds, steam or other similar materials and methods which involve a solvent or
cleaning action
• SSPC-SP-2 Hand Tool Cleaning
Removal of all rust scale, mill scale, loose rust and loose paint to the degree specified by hand
wire brushing, hand sanding, hand scraping, hand chipping or other hand impact tools or by a
combination of these methods. The substrate should have a faint metallic sheen and also be free
of oil, grease, dust, soil, salts and other contaminants.
• SSPC-SP-3 Power Tool Cleaning
Removal of all rust scale, mill scale, loose paint, and loose rust to the degree specified by power
wire brushes, power impact tools, power grinders, power sanders or by a combination of these
methods. The substrate should have a pronounced metallic sheen and also be free of oil,
grease, dirt, soil, salts and other contaminants. Surface should not be buffed or polished smooth.
• SSPC-SP-4 Flame Cleaning
Removal of all loose scale, rust and other detrimental foreign matter by passing high
temperature, high velocity oxy-acetylene flames over the entire surface, followed by wire
brushing. Surface should also be free of oil, grease, dirt, soil, salts and other contaminants.
• SSPC-SP-5  (NACE 1) White Metal Blast Cleaning
Removal of all mill scale, rust, rust scale, paint or foreign matter by the use of abrasives
propelled through nozzles or by centrifugal wheels. A White Metal Blast Cleaned Surface Finish is
defined as a surface with a gray-white, uniform metallic color, slightly roughened to form a
suitable anchor pattern for coatings. The surface, when viewed without magnification, shall be
free of all oil, grease, dirt, visible mill scale, rust, corrosion products, oxides, paint, or any other
foreign matter.
• SSPC-SP-6 (NACE 3) Commercial Blast Cleaning
Removal of mill scale, rust, rust scale, paint or foreign matter by the use of abrasives propelled
through nozzles or by centrifugal wheels, to the degree specified. A Commercial Blast Cleaned
Surface Finish is defined as one from which all oil, grease, dirt, rust scale and foreign matter
have been completely removed from the surface and all rust, mill scale and old paint have been
completely removed except for slight shadows, streaks, or discolorations caused
by rust stain, mill scale oxides or slight, tight residues of paint or coating that may remain; if the
surface is pitted, slight residues of rust or paint may by found in the bottom of pits; at least two-
thirds of each square inch of surface area shall be free of all visible residues and the remainder
shall be limited to the light discoloration, slight staining or tight residues mentioned above.
• SSPC-SP-7 (NACE 4) Brush-Off Blast Cleaning
Removal of loose mill scale, loose rust, and loose paint, to the degree hereafter specified, by the
impact of abrasives propelled through nozzles or by centrifugal wheels. It is not intended that the
surface shall be free of all mill scale, rust, and paint. The remaining mill scale, rust, and paint
should be tight and the surface should be sufficiently abraded to provide good adhesion and
bonding of paint. A Brush-Off Blast Cleaned Surface Finish is defined as one from which all oil,
grease, dirt, rust scale; loose mill scale, loose rust and loose paint or coatings are removed
completely but tight mill scale and tightly adhered rust, paint and are permitted to remain
provided that all mill scale and rust have been exposed to the abrasive blast pattern sufficiently
to expose numerous flecks of the underlying metal fairly uniformly distributed over the entire
surface.
• SSPC-SP-8 Pickling
Removal of all mill scale, rust and rust scale by chemical reaction, or by electrolysis, or by both. It
is intended that the pickled surface shall be completely free of all scale, rust, and foreign matter.
Furthermore, the surface shall be free of un reacted or harmful acid or alkali, or smut.
• SSPC-SP-9 Weathering Followed By Blast Cleaning
Weathering to remove all or part of the mill scale followed by one of the blast cleaning standards.
• SSPC-SP-10 (NACE 2) Near-White Blast Cleaning
Removal of nearly all mill scale, rust, rust scale, paint, or foreign matter by the use of abrasives
propelled through nozzles or by centrifugal wheels, to the degree hereafter specified. A Near-
White Blast Cleaned Surface Finish is defined as one from which all oil, grease, dirt, mill scale,
rust, corrosion products, oxides, paint or other foreign matter have completely removed from the
surface except for very light shadows, very slight streaks or slight discolorations caused by rust
stain, mill scale oxides, or light, tight residues of paint or coating that may remain. At least 95
percent of each square inch of surface area shall be free of all visible residues, and the
remainder shall be limited to the light discoloration mentioned above.
SSPC-SP-11 Tool Cleaning to Bare Meta
Complete removal of all rust, scale and paint by power tools, with resultant surface profile.           
SSPC-SP-12 (NACE 5)
Surface Preparation and Cleaning of Steel and Other Hard Materials by High- and Ultrahigh-
Pressure Water Jetting Prior to Re coating - Used where abrasive blasting is not feasible
because the resultant flying abrasive particles and drifting dust may damage highly sensitive
rotary equipment and filters, cause contamination of nearby mechanical equipment and
structures or cause contamination of the environment.
SSPC-SP-13 (NACE 6) Concrete Preparation
This standard gives requirements for surface preparation of concrete by
mechanical, chemical, or thermal methods prior to the application of bonded protective coating or
lining systems. The requirements of this standard are applicable to all types of cementitious
surfaces including cast-in-place concrete floors and walls, pre-cast slabs, masonry walls and
shotcrete surfaces. An acceptable prepared concrete surface should be free of contaminants,
laitance, loosely adhering concrete, and dust, and should provide a dry, sound, uniform
substrate suitable for the application of protective coating or lining systems. Depending upon the
desired finish and system, a block filler may be required. Block (Cinder and Concrete) - Remove
all loose mortar and foreign material.           
SSPC-SP-14 (NACE 8) Industrial Blast Cleaning
Surfaces viewed without magnification, are free of all visible oil, grease, dust, and dirt. Traces of
tightly adherent mill scale, rust and coating residue are permitted to remain on 10% of each unit
area of the surface if they are evenly distributed.