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pre treatment

For preparing surface prior to painting (automobile component) whether spray p.t. or dipped should be used

vivek ekbote
- India
1999

1999

I'm not sure what 'p.t.' means -- pretreatment?

There is very little ultimate difference in the capabilities of surfaces applied by spraying vs. immersion; it's mostly just a question of which is more practical for the items in question. But sprayed pretreatments and phosphating work much faster because of the impingement, the energy imparted, the freshness of solution actually touching the part, etc.

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey
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