Protective Paint Systems

Thi.s is the most important factor deitermining the life of a protective paint system on steel.. The best surface is one free from mri, scale, grease, dirt... 

Protective coatings are specified in numerous national and international standards. For example, the extensive control description, ISO 12944 - Paints and varnishes -Corrosion protection of steel structures by protective paint systems - deals with the protection of steel by paint systems and covers in eight parts more or less all features, which are important to achieve good corrosion protection [5.108] ... 

In ISO 12944-6, a method is described for evaluating the quality of a protective paint system by means of laboratory tests, which enables the user to select the most suitable test methods [5.108]. 

ISO 12944, Paints and varnishes - Corrosion protection of steel structures by protective paint systems, International Organization for Standardization, Geneve, Switzerland, 1998... 

The total value of paints, varnishes, and lacquers produced in the United States in 2006 amounted to about 21 billion (21 x lO ) dollars [1], half of which is estimated to be used for corrosion protection. Painted systems require continued maintenance to ensure integrity of corrosion protection. For example, in 1995, the Port Authority of New York and New Jersey began a 20-year, 500 million... 

ISO 12944-5 1998 Corrosion Protection of Steel Structures by Protection Paint Systems... 

Paints and varnishes—Corrosion protection of steel structures by protective paint systems—Part 1 General introduction... 

Avoid over-protection of cathodically protected structures this could cause peeling of protective paint systems and also hydrogen embrittlement, especially of high-strength steels. 

Paints Varnishes - Corrosion Protection of Steel Structures by Protective Paint Systems. ISO 12944, parts 1,2 and 5. ISO, Geneva, Switzerland, 1998. 

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