| 摘要 |
The metal profile (1) has a non-surface treated, long contact area (2) which locates against a metal screen fillet. Prior to surface treatment, the tubular space formed during pressing between the additional part (3) on the profile and the contact area is blocked. Thus the contact area does not cone into contact with the treatment fluid. After surface treatment, the end parts are re-opened, and the extra part is removed. |
