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Ted Mooney, P.E. RET
Pine Beach, NJ

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Powder coating on galvanized sheet

Dear sir

Can I paint powder on galvanized, especially metallics ?

NADEEM ZAKI AL SHAWAREB
sales man for powder - AMMAN, JORDAN
2004

Duplex Systems: Painting Over Hot-Dip Galvanized Steel
by American Galvanizers Association
duplex_systems

(Free!)

2004

You can. Adhesion is tricky, so a proper pretreatment (perhaps 8-10 stages) is essential. This should be either Zn phosphate or Cr.

Geoff Crowley
Crithwood Ltd.
Westfield, Scotland, UK

HI NADEEM ZAKI AL SHAWAREB

First you can paint electrostatic powder in alkaline galvanized steel but without brightener. but maybe with these method some defect will be case such as bad adhesion and bad finish surface (impurities) so you must first pretreatment and phosphating the galvanized steel before painting it or use normal steel.

Aly Gomaa
- Cairo, Egypt
2004

July 19, 2010

In the 8-10 stages, will the galvanized, zinc coating be totally removed? We have a requirement of having the galvanized sheet be powder coated. How can we be assured that the delivered product used galvanized sheet instead of the normal steel?

VICTOR GAA
- Quezon City, Philippines

adv.
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