ISO 12944 ATMOSPHERIC CORROSION CATEGORIES & GEOTEC COATING SYSTEMS
ISO 12944 Standard was published in 1998 as a European, thus international standard. It is the most valid and highest standard reference in the world for effective protection of steel structures against corrosion. In steel structure industry, what draws attention regarding paint systems is the evaluation of system durability. Durability depends on many external factors like ambient conditions, design of the structure, surface preparation, coating application and drying process. Durability is also related with the chemical and physical feastures of the coating system e.g. binder type, film thickness.
| Corrosion Category | Outdoor | Indoor | Target Usage Period | Coating System | What GEOTEC Offers |
| C2 Low | Atmospheric conditions where pollution is low e.g. rural areas | Structures wherecondensation is undesirable e.g: warehouses, sports halls | 2-5 Years | Zinc phosphate epoxy
Aliphatic acrylic polyurethane |
Geomer 1402
Geopur 3700 |
| C3 Medium | City and industry environment with medium level of sulphur dioxide e.g. coastal regions with low salt ratio. | Production facilities with high humidity and partial air pollution e.g. food processing facilities and laundries | 5-15 Years |
Zinc phosphate epoxy Aliphatic acrylic polyurethane |
Geomer 1402
Geopur 3700 |
| C4 High | Coastal regions and industrial facilities where salt ratio is low. | Chemical production facilities, swimming pools, premises by the seaside | 5-15 Years | Zinc phosphate epoxy
Hi-Built Epoxy MIO Aliphatic acrylic polyurethane |
Geomer 1402
Geofill 2507 Geopur 3700 |
| More than 15 Years | Zinc rich epoxy
Hi-Built Epoxy Aliphatic acrylic polyurethane |
Geozinc 1301
Geofill 2505 Geopur 3700 |
|||
| C5-I Very High (Industrial) | Industrial facilities with high humidity and aggressive ambient conditions | Structures where continuous condensation and high level pollution is observed or indoor spaces | 5-15 Years | Zinc phosphate epoxy
Hi-Built epoxy MIO Aliphatic acrylic polyurethane |
Geomer 1402
Geofill 2507 Geopur 3700 |
| More than 15 Years | Zinc rich epoxy
Hi-Built Epoxy Aliphatic acrylic polyurethane |
Geozinc 1301
Geofill 2505 Geopur 3700 |
|||
| C5-M Very High (Sea) | Coastal regions and industrial facilities where salt ratio is high. | Structures where continuous condensation and high level pollution is observed or indoor spaces | 5-15 Years | Zinc phosphate epoxy
Hi-Built epoxy MIO Aliphatic acrylic polyurethane |
Geomer 1402
Geofill 2507 Geopur 3700 |
| More than 15 Years | Zinc rich epoxy
Hi-Built epoxy Aliphatic acrylic polyurethane |
Geozinc 1301
Geofill 2505 Geopur 3700 |
|||
| Im1/Im2 | Sea water or under the fresh water (port piles, oil refineries) | More than 15 Years | Zinc rich epoxy
Hi-Built epoxy MIO Coal-Tar epoxy Glassflake epoxy |
Geozinc 1301
Geofill 2507 Ekotar 902 Geocoat 3803 |
|
| Im3 | Underground (foundation piles, hydroelectric power plant pipes, other steel pipes) | ||||