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The
Galvanizing Process - Performance
For over 250 years, hot-dip galvanizing has proven to be a high
quality and cost effective corrosion protection coating.
In most applications hot-dip galvanizing is superior to paint.
Paint versus Galvanizing
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Galvanizing |
Paint |
| Adhesion |
Several Kpsi |
? - varies |
| Application |
Works only on adequately
prepared surfaces |
Inadequate surface preparation
can lead to paint failures in field |
| Availability |
365 days a year |
Depends of weather and humidity
conditions |
| Bond to steel |
Excellent |
? – varies |
| Cathodic protection |
Yes |
No |
| Curing |
None required |
Up to 28 days |
| Delivery |
Short turnaround time |
Can be lengthened by weather
delays |
| Edge protection |
Equal to protection on other
surfaces |
Thins at edges |
| Inspection |
Measurable, Predictable,
Reliable, Simple |
Unreliable, Time consuming,
Quality can’t be determined |
| Maintenance |
Little, if any |
Periodic Repairing |
| Metallurgical Bond |
Yes |
No |
| Photochemically Sensitive |
No |
Possible |
| Prep to Paint |
Wash Surface Clean |
Grit Blast to SSPC 6, 8, or 10
and Contain |
| Transportation |
Resistant to Abrasion |
Soft Coating Can Scratch |
| Tubular Structures |
Inside and Outside Protection |
No inside corrosion protection |
| VOC’s |
None |
? - Varies |
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