| Brush
Off |
|
SA-1
|
|
Swedish Standards
Organisation |
| |
|
SSPC-SP7
|
|
Steel Structures
Painting Council (USA) |
| |
|
NACE No. 4 |
|
National Association
of Corrosion Engineers |
| Commercial |
|
SA-2 |
|
Swedish Standards
Organisation
|
| |
|
3rd Quality |
|
United Kingdom
Standards (BS 4232)
|
| |
|
SSPC-SP6 |
|
Steel Structures
Painting Council (USA)
|
| |
|
NACE No. 3 |
|
National Association
of Corrosion Engineers |
| Near-White
Metal |
|
SA-2.5 |
|
Swedish Standards
Organisation
|
| |
|
2nd Quality |
|
United Kingdom
Standards (BS 4232)
|
| |
|
SSPC-SP10 |
|
Steel Structures
Painting Council (USA)
|
| |
|
NACE No. 2 |
|
National Association
of Corrosion Engineers |
| White
Metal |
|
SA-3 |
|
Swedish Standards
Organisation
|
| |
|
1st Quality |
|
United Kingdom
Standards (BS 4232)
|
| |
|
SSPC-SP5 |
|
Steel Structures
Painting Council (USA)
|
| |
|
NACE No. 1 |
|
National Association
of Corrosion Engineers |
| |
|
|
|
|
| You should consult
with your local standards organisation to obtain complete specifications
on degrees of surface cleanliness for your country. |
| |
|
|
|
|
| General Description
of the Main Blast Standards |
Brush Off
Brush off blast cleaning is a method of preparing the surfaces which,
when viewed with magnification, shall be free of all visible oil,
grease, dirt, dust, mill scale, rust and paint/coatings. Tightly
adherent mill scale, rust and old paint/coatings may remain on the
surface. Mill scale rust and old paint/coatings are considered adherent
if they cannot be removed by lifting with a blunt putty knife. |
|
Commercial
Commercial blast cleaning is a method of preparing the surfaces
which, when viewed with magnification, shall be free of all visible
oil, grease, dirt, dust, mill scale, rust and paint/coatings. Generally
evenly dispersed very light shadows, streaks and discoloration’s
caused by stains of rust, mill scale or previously applied paint/coatings
may remain on no more than 33% of the surface. Slight residues of
rust and paint/coatings may also be left in the craters of pits
if the original surface is pitted. |
|
Near-White Metal
Near white metal blast cleaning is a method of preparing the surfaces
which, when viewed with magnification, shall be free of all visible
oil, grease, dirt, dust, mill scale, rust and paint/coatings. Generally
evenly dispersed very light shadows, streaks and discoloration’s
caused by stains of rust, mill scale or previously applied paint/coatings
may remain on no more than 5% of the surface. |
|
White Metal
White metal blast cleaning is a method of preparing the surfaces
which, when viewed with magnification, shall be free of all visible
oil, grease, dirt, dust, mill scale, rust and paint/coatings. |
| |
|
|
|
|
You should consult
with your local standards organisation to obtain complete specifications
on degrees of surface cleanliness for your country.
|
