Pre-treatment for Shipbuilding steel (ball blasting, derusting,painting)
| items | name | unit | Type1 | Type2 | Type3 |
| 1 | workpiece width | mm | 2500- | 3500- | 4500- |
| 2 | Steel plate width(Max) | mm | 2500 | 3500 | 4500 |
| 3 | Steel plate thickness | mm | 3~60 | 3~60 | 3~100 |
| 4 | Profile steel min cross section | mm*mm | 60*80 | 60*80 | ------ |
| 5 | Profile steel max cross section | mm*mm | 1000*300 | 1000*300 | ------ |
| 6 | workpiece min length | mm | 2400 | 2400 | 2400 |
| 7 | workpiece max length | mm | 12000 | 12000 | 12000 |
| 8 | Shot blasting grade | ISO8501-1,1988 | GB8923-88 | (Bsa2.5) | |
| 9 | surface roughness | μm | 40~70 | 40~70 | 40~70 |
| 10 | Film thickness | μm | 15~25 | 15~25 | 15~25 |
| 11 | Paint type | Drying-type Zinc-rich primer | Drying-type Zinc-rich primer | Drying-type | |
| Zinc-rich primer |
