1. NACE SPECIFICATION White Metal Blast Cleaning
Near White Metal Blast Cleaning
Commercial Blast Cleaning
Brush-Off Blast Cleaning

2. SSPC-USA SPECIFICATION (Steel Structure Painting Council)
SSPC -1 Solvent Cleaning
SSPC -2 Hand Tool Cleaning
SSPC -3 Power Tool Cleaning
SSPC -4 Flame Cleaning
SSPC -5 White Metal Blast Cleaning
SSPC -6 Commercial Blast Cleaning
SSPC -7 Brush-Off Blast Cleaning
SSPC -8 Pickling
SSPC -10 Near White Metal
SSPC -12 High-and Ultrahigh-Pressure Water Jetting

3. SS 05 59 00 SWEDISH STANDARD Sa 1 Brush-Off Blast Cleaning
Sa 2 Commercial Blast Cleaning
Sa 2 ½ Near White Metal Blast Cleaning
Sa 3 White Metal Blast Cleaning
GRADE FOR POWER TOOL CLEANING
St 1 Is consider an un suitable surface for painting
St 2 Thorough Cleaning
Sa 3 Very Thorough Cleaning

4. ISO 8501-1 GRADES FOR BLASTING
Sa 1 Light Blast Cleaning
Sa 2 Thorough Blast Cleaning
Sa 2 ½ Very Thorough Blast Cleaning
Sa 3 Blast Cleaning to visually clean steel

5. ISO 8501-1 GRADES FOR RUST (Surface Condition)
A Adherent mill scale
B Rusty mill scale
C Rusted
D Pitted and rusted

6. NACE RP 0274-98 Minimum testing voltage for various coating thickness
(mm)
(1/32 in)
(mils)
Testing Voltage
0.51
0.79 13
4.8
1.6
2.4
3.2
4.0 19 16
0.64 1 2 3 4 6 5 20 24 31
10000
7000
6000 94 62
125
156
188
500
625
750
12000
16000
17000
34000
31000
28000
14000