Substrate surface treatment table
| General name |
International Std.Organization Sweden |
USA | Treatment method |
Degree of substrate surface treatment (our recommendation) |
|
|---|---|---|---|---|---|
| Keren | ISO | SSPC | |||
| No1 Keren |
Sa 3 (A,B,C,D) |
SP-5 | Sand blast Grid blast Shot blast |
Remove black skin (old film) & rust completely then obtain graysh white surface |
|
| Sa 2.5 (A,B,C,D) |
SP-10 | ditto | |||
| - | Sa 2 (B,C,D) |
SP-6 | ditto | ||
| - | Sa 1 (B,C,D) |
SP-7 | ditto | ||
| No2 Keren |
St 3 (B,C,D) |
SP-3 | Powerd tool | Remove black skin (old film) & rust then expose substrate surface |
|
| No3 Keren |
St 2 (B,C,D) |
SP-2 | Hand tool | Completely adhered film to be remained but others are removed |
|
| ISO | International Organization for Standardization |
| SSPC | Steel Structures Painting Council Vis 1 |