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Coil Coating for HVAC Projects in Southeast Asia

Typical sitesC3· MediumC4· HighC5· Very high

Local conditions

Main exposure
Year-round humidity, airborne salt, typhoons, industrial pollution
Annual mean temperature, coastal cities
27.8–28.9 °C
Annual mean relative humidity, coastal cities
73–82 %
Typical category, coastal sites
C4–C5 ISO 9223, estimated

Climate normals (mostly 1991–2020) from national meteorological services, NOAA and WMO for five major coastal cities in the region; ranges span those cities. Categories are indicative estimates for the site types shown.

Typical projects

  • Coastal hotels and island resorts
  • Factories in industrial parks
  • Office towers, malls and hospitals
  • Data centres
  • Distributor stock for coastal regions

Recommended systems

PG-S1

Waterborne polysiloxane (sol-gel)

Film
5–15 μm
Cure
Thermal or ambient
Best for
New coils before shipment, OEM dip lines

PG-W

Waterborne two-component

Film
5–10 g/m² per side
Cure
80 °C touch-dry
Best for
Coil lines, mild coastal and humid sites

PG-C

Air-dry two-component, chemical-resistant

Film
20–40 μm
Cure
Ambient 72 h
Best for
Complete units, chemical and wastewater sites

Shipping from South China

Loading portNansha / ShekouSouth China
Discharge portMain Southeast Asian container ports

Transit time depends on the destination and the schedule, and is confirmed with each quote.

Documents shipped with the goods

Humidity keeps corrosion going

Across the region coils stay wet for long periods, so corrosion that would pause in a dry climate runs all year. Coastal cities add airborne salt, and island sites are coastal almost everywhere.

Typhoons

Typhoons push salt spray and wind-driven rain much further inland than day-to-day sea breezes. After a storm, coils carry heavy salt deposits that stay wet in the humid air.

Industrial parks

Industrial parks near the coast combine pollution, salt and humidity. Factories there should be treated at the higher end of the range, moving to PG-C where acid gases are present.

Talk to us

Send the project list and destination port

We reply within 24 hours with a coating recommendation and quote.

Can distributors order coated units for stock?

Yes. Coated stock for coastal regions can be ordered by model and quantity, with the batch report covering each shipment.

Does the typhoon season change the coating choice?

Storms carry salt spray further inland than normal onshore winds, so sites a few kilometres from the coast should be treated as coastal.

Are evaporators coated as well?

In humid coastal areas it is often worth it, especially for units that treat fresh outdoor air.

Request a quote

Tell us the equipment, the site and the destination port. We reply within 24 hours.

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