4.2.1 Protection of steel

Protection of steel
CORROSION CLASSIFICATION ACCORDING TO ISO 12944-2 Durability according to ISO 12944-1 SURFACE PREPARATION* PRIMER INTERMEDIATE COATING Top coat DRY FILM THICKNESS (DFT)
PREMIUM C5 High 15–25 years
Medium 7–15 years
Low up to 7 years
STANDARD C4 High 15-25 years
Medium 7-15 years
Low up to 7 years
ECONOMICAL C3 High 15-25 years
Medium 7-15 years
Low up to 7 years

* After cleaning and degreasing the durface with NITRO or HELIOCEL, teh surface must be sanded to level of Sa 2.5 according to the standard ISO 8501-1, and dusted before painting. 

The selection of QUALITY LEVEL (PREMIUM, STANDARD or ECONOMICAL) depends of Corrosivity Class of the environment to which the object will be exposed (ISO 12944-2) and the predicted durability (ISO 12944-1). See (Table 1). 

Helios also offers many other metal protection systems that can meet your specific requirements. Please contact your local HELIOS representative for further information.