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What is ISO 12944-6:2018?


ISO 12944-6:2018 is a standard developed by the International Organization for Standardization (ISO) that provides guidelines for the corrosion protection of steel structures. It specifies the types of paint systems and coating materials that should be used to protect steel structures in different environments. In this article, we will delve into the details of ISO 12944-6:2018, its significance, and its application.

Understanding ISO 12944-6:2018

ISO 12944-6:2018 focuses on the selection of paint systems and coating materials to protect steel structures against corrosion. It classifies protective paint systems into different categories based on their expected service life and the corrosivity of the environment they are exposed to. The standard covers various factors such as surface preparation, compatibility of paint systems, and inspection methods to ensure the effectiveness of the coatings.

One key aspect of ISO 12944-6:2018 is the consideration of the corrosivity category of the environment. This categorization helps in determining the appropriate paint system required for different environments. The standard provides detailed information on the resistance of paint systems against environmental factors such as humidity, temperature, and exposure to chemicals, ensuring the longevity of steel structures.

Application of ISO 12944-6:2018

ISO 12944-6:2018 has broad applications across industries where steel structures are prone to corrosion. Some common examples include offshore platforms, bridges, industrial plants, and chemical storage facilities. By adhering to the guidelines set forth by the standard, engineers and industry professionals can ensure the durability and reliability of steel structures, even in harsh environmental conditions.

The standard provides a step-by-step process for selecting suitable protective systems, starting from the assessment of the corrosivity category and concluding with the inspection and maintenance of the paint systems. It emphasizes the importance of proper surface preparation, ensuring the compatibility of different coatings, and conducting regular inspections to monitor the condition of the protective systems.


ISO 12944-6:2018 is an essential standard for protecting steel structures against corrosion. By providing detailed guidelines for selecting and applying protective coatings, it ensures the longevity and structural integrity of steel in various environments. Engineers and industry professionals should familiarize themselves with this standard to achieve optimal corrosion protection and maintain the quality of steel structures over time.

Remember, when dealing with steel structures, it is crucial to consider not only their initial cost but also their long-term durability. ISO 12944-6:2018 serves as a valuable resource in the field of corrosion protection and plays a vital role in safeguarding steel structures worldwide.

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