| STANDARDS SSPS (*) SIS (**) |
DEFINITION OF SURFACE PREPARATION STANDARDS |
| Blast-cleaning to visually clean steel: SP-5 Sa-3 |
The surface shall be free from visible oil, grease and dirt, and shall be free from mill scale, rust, paint coatings and foreign matter. It is the highest level of cleaning where white metal surface is obtained. |
| Very thorough blast-cleaning: SP-10 Sa-2 1/2 |
The surface shall be free from visible oil, grease and dirt, and from mill scale, rust, paint coatings and foreign matter. Any remaining traces of contamination shall show only as slight stains in the form of spots or stripes. The surface shall be cleaned around 95% and will obtain a glossy color. |
| Thorough (commercial) blast-cleaning: SP-6 Sa-2 |
The metal surface shall be free from visible oil, grease and dirt, and from most of the mill scale, rust, paint coatings and foreign matter. Any residual contamination shall be firmly adhering to the cavities and flakes. |
| Light blast-cleaning: SP-7 Sa-1 |
The surface shall be free from visible oil, grease and dirt, and from poorly adhering mill scale, rust, paint coatings and foreign matter. |
| Cleaning via machine: SP-3 St-3 |
Old paint, rust and foreign materials on the surface are cleaned via hand tools like wire brush and sandpaper. |
| Cleaning via handtools: SP-2 St-2 |
Old paints, rust and foreign materials on the surface are cleaned via wire brush and sandpaper. |
| Cleaning with solvent: SP-1 |
Oil, grease and dirt on the surface is cleaned via solvent or alkali solution. Rust cannot be removed by this method. |
| Pikling SP-8 |
Chemical cleaning of rust and foreign materials present on the metal surface by dipping itinto acid solutions. |
| Cleaning via water jet |
Oil, grease, dirt and rust are removed with high pressure (min. 1000 bar) water jets. However, there is possibility of repeated rust due to remaining water droplets on the surface. |
Türkçe