Thin-Film vs Thick-Film Coil Coatings
Thin film vs thick film
| Thin film | Thick film | |
|---|---|---|
| Typical thickness | 5–15 μm (PG-S1, PG-S2, PG-W). | 20–40 μm (PG-C) and above. |
| Heat-transfer impact | Tested at up to 1.8% for PG-S1. | Larger; test on a comparable coil. |
| Fin bridging risk | Low with controlled drain-off. | Higher on high-density fins. |
| Chemical barrier | Good for general coastal and industrial air. | Better for acids, alkalis and H₂S. |
| Application | Mostly dip, with oven or ambient cure. | Mostly spray, often ambient cure. |
Choose thin film if…
- Coastal and general industrial sites
- High fin density or microchannel coils
- Heat-transfer performance is critical
Choose thick film if…
- Chemical plants, wastewater sites, splash zones
- Complete units that need an air-dry system
- Fin spacing leaves room for a thicker film
Cost and lead time
Thin films applied by dip use less coating per coil and move through the line quickly with oven cure. Thick films use more material, and air-dry thick films need several days of cure before packing.
Related
Request a quote
Tell us the equipment, the site and the destination port. We reply within 24 hours.