Zinc Anti-Corrosion Material ZAP Series [Mechanism of Corrosion Promotion in Piping Supports]

basic information

■□■Mechanism■□■ The piping support structure may experience a more severe corrosion environment compared to general areas due to the combined effects of the factors listed below, potentially leading to various corrosion incidents. 【Promoting Factors】 ■ Water tends to accumulate (long wetting time) - The shape tends to trap water (rainwater and condensation accumulate along the piping) - Debris and dust can easily accumulate, leading to capillary condensation ■ Wear of coatings and piping due to thermal expansion and contraction - Piping moves relative to the support structure due to thermal expansion, causing significant friction at the contact points, which leads to early peeling of the coating. - The corrosion products that form afterward repeat the peeling and regeneration process, resulting in significant wear of the piping (it can be considered a type of erosion-corrosion). ■ Structurally, an oxygen concentration cell is formed - An oxygen concentration cell is formed between the contact points of the piping and the support structure, as well as the surrounding areas. ■ For more details, please contact us.

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Applications/Examples of results

Inside plants such as oil refineries, piping systems for transporting water, steam, gas, and other substances are laid out like a network. Among these, the contact points between the piping and the supports are exposed to harsh corrosion environments due to electrochemical actions and thermal expansion. As a result, rust progresses quickly, and in the worst-case scenario, holes can form, posing a high risk of environmental issues and disasters. Therefore, corrosion protection for piping supports is crucial for risk management.