| STAGE |
 |
Cleaner heated to 160°F. |
 |
Note:
Clear water rinse after each stage,
from 1 to 7. |
| STAGE |
 |
Cleaner electrically heated to 140°F. |
| STAGE |
 |
Muriatic acid (40% concentration). |
| STAGE |
 |
Cleaner electrically heated to 140°F. |
| STAGE |
 |
Muriatic acid (20% concentration). |
| STAGE |
 |
Bright zinc electroplating. |
| STAGE |
 |
Clear chromate. |
| STAGE |
 |
Dryer. |