{"id":2464,"date":"2026-04-08T15:28:04","date_gmt":"2026-04-08T12:28:04","guid":{"rendered":"https:\/\/kotekservice.com\/uncategorized\/sandblasting-and-corrosion-painting-in-industry-a-total-solution-for-the-protection-of-steel-structures\/"},"modified":"2026-04-08T15:29:52","modified_gmt":"2026-04-08T12:29:52","slug":"sandblasting-and-corrosion-painting-in-industry-a-total-solution-for-the-protection-of-steel-structures","status":"publish","type":"post","link":"https:\/\/kotekservice.com\/en\/uncategorized\/sandblasting-and-corrosion-painting-in-industry-a-total-solution-for-the-protection-of-steel-structures\/","title":{"rendered":"Sandblasting and corrosion painting in industry – A total solution for the protection of steel structures"},"content":{"rendered":"\n
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Industrial steel structures, process equipment and infrastructure make up a significant part of companies’ fixed assets. Managing the life cycle of these structures requires careful attention to their corrosion resistance properties, as oxidation and chemical wear of the metal can cause costly production downtime and compromise structural safety. Effective corrosion protection is a key investment in plant reliability. High quality sandblasting and painting form a technical package where the accuracy of the priming and the correctly selected coating system determine durability for decades to come. Professional execution always takes into account the specific conditions of the site, such as mechanical stress, temperature fluctuations and chemical exposure, to achieve the optimum level of protection and long service life. <\/p>\n

The importance of pre-treatment: why is sandblasting a necessity?<\/h2>\n

In steel surface treatment, the quality of the end result is determined before the first drop of paint is applied. According to technical standards and expert estimates, up to 80% of premature coating failures are caused by inadequate priming. Sandblasting is the most effective method of removing mill scale, rust and old coatings from steel. At the same time, it creates a controlled surface roughness, or adhesion profile. <\/p>\n

In practice, a correct pre-treatment ensures that the corrosion paint adheres to the metal mechanically and chemically. If the level of cleaning is inadequate, contaminants such as salts or moisture trapped under the coating will initiate a corrosion process under the paint film. This will inevitably lead to the peeling of the coating and rapid deterioration of the metal. For demanding industrial applications, a standardised Sa 2.5 cleaning level is commonly used, which achieves an almost completely clean metal surface. <\/p>\n

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Technical cleaning levels (ISO 8501-1)<\/h4>\n
Sa 2Intensivespray cleaning – most dandruff and impurities are removed.<\/strong><\/div>\n
Sa 2.5Verythorough cleaning – the surface looks metallic clean.<\/strong><\/div>\n
Sa 3Cleaningto optically pure steel.<\/strong><\/div>\n<\/div>\n

The blowing material is always selected according to the requirements of the site. Sandblasting and painting of steel structures often requires a sharp-edged blasting material to ensure adequate mechanical adhesion, i.e. an anchor profile. This allows the coating to withstand impact and abrasion without chipping. <\/p>\n

Paint systems and corrosion classes (C1-CX)<\/h2>\n

Corrosion classification is an essential tool in the design of protection for industrial installations. The ISO 12944 standard defines classes based on environmental stress that guide the choice of a coating system. The more severe the stress, the more resistant the coating structure required. For example, a steel beam located indoors requires different treatment than structures located in coastal salt air or near chemical pools. <\/p>\n

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C3 – Moderate stress<\/h5>\n

Typical in urban and industrial climates and in production areas with high humidity.<\/p>\n<\/div>\n

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C4 – High stress<\/h5>\n

Industrial areas and coastal areas with moderate salinity. Requires strong protection. <\/p>\n<\/div>\n

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C5 – Very high stress<\/h5>\n

Aggressive industrial environments and offshore sites. Maximum protection for demanding environments. <\/p>\n<\/div>\n<\/div>\n

Systematic sandblasting and painting bring significant economic benefits when carried out in accordance with these classifications. A properly sized coating layer extends maintenance intervals, which directly reduces material and labour costs over the life of the plant. <\/p>\n

In heavy industry, where structures are exposed to acids or alkalis, ordinary painting is often not enough. In these applications, special coatings such as ceramic reinforced ARC composites can be used after sandblasting. They provide a level of protection that traditional epoxy paints cannot match and significantly extend the life of process equipment. <\/p>\n

Special coatings for mechanical and chemical stress management<\/h2>\n

While traditional sandblasting and painting cover many of the basic needs of industry, certain environments demand extreme performance from coatings. When steel structures are exposed to constant abrasion, strong acids or rapid temperature changes, the protective performance of conventional systems is no longer sufficient. ARC composite coatings or elastic polyurea are often the solution. <\/p>\n

ARC composite coatings have been developed for applications where material wear is exceptionally high. They are used, for example, in industrial mixers, pumps and tanks handling corrosive chemicals such as sulphuric or hydrochloric acid. The composite structure makes the surface extremely hard, making it much more resistant to erosion and chemical stress than traditional methods. This ensures that expensive process equipment remains in service without unforeseen breakdowns. For more information on demanding solutions, contact our expert metal coating specialists.<\/a> <\/p>\n

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Material properties for demanding conditions<\/h4>\n
ARC compositesOxygen resistanceand erosion protection<\/strong><\/div>\n
PolyureaSeamlesswaterproofing and flexibility<\/strong><\/div>\n
Epoxy coatingsMechanicalresistance and excellent adhesion<\/strong><\/div>\n<\/div>\n

Quality assurance and technical inspection in project management<\/h2>\n

In industrial surface treatment contracts, quality is based on accurate measurements and compliance with standards. Successful sandblasting and painting requires systematic documentation at all stages of the process. Monitoring conditions such as relative humidity and steel surface temperature is essential, as painting below the dew point will compromise the adhesion of the coating. <\/p>\n

The quality of the finished surface is verified by a series of technical tests. A film thickness measurement (DFT) ensures that the coating has been applied sufficiently to protect the steel without the risk of cracking. In addition, adhesion tensile tests verify that the coating has adhered to the substrate with the required force. Accurate quality control significantly extends the service life of the structure compared to poorly controlled work. <\/p>\n

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Checking the degree of cleaning<\/h5>\n

Visually verify cleanliness according to ISO standards before painting.<\/p>\n<\/div>\n

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Diaphragm thickness (DFT)<\/h5>\n

Measuring the compliance of the thickness of layers using electronic meters.<\/p>\n<\/div>\n

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Infection tests<\/h5>\n

Ensure the mechanical stability of the coating on the substrate according to standards.<\/p>\n<\/div>\n<\/div>\n

Life cycle costs and predictability of surface treatment<\/h2>\n

In industrial investment decisions, the focus has shifted from purchase price to life-cycle costs. The cheapest offer can prove costly if the coating has to be replaced prematurely or fails under harsh conditions. Properly designed and implemented corrosion prevention is part of the overall risk management of an installation. When sandblasting and painting are done correctly at the same time, maintenance of the structure is easier and costs remain predictable. <\/p>\n

A competent partner will assess the stress conditions on the site and recommend a solution that offers the best protection for the cost. This will achieve an optimal balance between material purchases, quality of work and future maintenance needs. A reliable partner also ensures adherence to schedules, which is crucial, especially during production downtimes. <\/p>\n

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Comprehensive surface treatment services for industry<\/h3>\n

Kotek Factory Service Oy is a specialist in industrial surface treatments and corrosion protection, carrying out demanding projects nationwide. We offer professional technical implementation, combining decades of experience, adequate resources and uncompromising quality assurance. Whether it’s sandblasting steel structures, chemical-resistant ARC coatings or large-scale corrosion painting, we ensure your project is completed on time and to the highest technical standards. <\/p>\n

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\u2605<\/span>RALA-VALIDITY<\/span><\/div>\n
\u2605<\/span>ISO STANDARDS<\/span><\/div>\n
\u2605<\/span>NATIONAL OPERATOR<\/span><\/div>\n<\/div>\n Discover our paint shop services <\/a><\/div>\n

Protecting industrial structures from corrosion is a constant concern for the value and safety of the plant. By choosing the technically correct methods and ensuring the quality of the work with the help of a professional, companies can focus on their core business, confident that the infrastructure will stand the test of time and conditions. Investing in careful pre-treatment and a high quality painting process pays off in terms of durability and financial stability. <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Industrial steel structures, process equipment and infrastructure make up a significant part of companies’ fixed assets. Managing the life cycle of these structures requires careful attention to their corrosion resistance properties, as oxidation and chemical wear of the metal can cause costly production downtime and compromise structural safety. Effective corrosion protection is a key investment […]<\/p>\n","protected":false},"author":1,"featured_media":1432,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[70],"class_list":["post-2464","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-sandblasting-and-painting"],"_links":{"self":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/posts\/2464","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/comments?post=2464"}],"version-history":[{"count":1,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/posts\/2464\/revisions"}],"predecessor-version":[{"id":2466,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/posts\/2464\/revisions\/2466"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/media\/1432"}],"wp:attachment":[{"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/media?parent=2464"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/categories?post=2464"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kotekservice.com\/en\/wp-json\/wp\/v2\/tags?post=2464"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}