Sa2.5 (Near White Metal Blast Cleaning) is generally considered to be equivalent to the SSPC SP-10 standard.
"ISO Sa2.5" refers to one of the standards for surface preparation established by ISO (an international non-governmental organization based in Geneva, Switzerland, aimed at creating internationally common standards). It requires the removal of visible contaminants (such as oil, dirt, rust, and oxides) from the surface, allowing only slight traces of dirt in the form of spots or streaks. "Benefits of ISO Sa2.5" ISO Sa2.5 is the second highest cleanliness standard for surface preparation. The highest standard, ISO Sa3, requires the removal of almost 100% of surface contaminants, which can be costly and time-consuming. ISO Sa2.5 allows for a maximum of 5% minor contamination, reducing costs while still ensuring sufficient cleanliness, making it a widely used standard. Surfaces prepared to Sa2.5 can maximize the performance of coatings, preventing early delamination of the paint film and extending the product's lifespan. This specification is often chosen for harsh environments, such as highly corrosive coastal areas.
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basic information
"Work Method for ISO Sa2.5" 1. Remove any slag, welding spatter, etc., that is adhered to the surface. 2. Use solvents to remove any oils, greases, etc., that are adhered to the surface. 3. Completely remove all foreign substances adhered to the surface by blasting. 4. Remove dust and debris with clean, dry air. "Points to Note for ISO Sa2.5" Feasibility of Construction Based on Environmental Conditions - Work should be halted on days with bad weather or high humidity. Painting Process After Completion of Work - The surface after blasting becomes active and rust will form in a short time, so painting must be done promptly. - If rust occurs again before painting, blasting treatment must be performed again. - A comparison of the "Condition of Steel Before Blasting" and the "Condition of Steel After Blasting" is made with photographs, and the suitability of the processing is judged by comparing the actual photos with the product.
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Turning your troubles into good experiences for our customers. We respond to such customer requests. From "nothing" to "something." Creating "one-of-a-kind" instead of "mass production." At Harada Ironworks, we strive to fulfill your wishes. To meet the diverse needs of our customers, we provide a consistent production service from material procurement to painting and installation, helping to shorten delivery times and reduce total costs. With over 70 years of experience, we are committed to providing even greater "high added value" to our products through the skills and know-how we have honed over the years. If you have any inquiries regarding production or painting, please feel free to contact us. We look forward to hearing from you. For blasting and painting, leave it to us. Harada Ironworks Co., Ltd. Hiroshima TEL: 082-232-2445 FAX: 082-293-0286 Contact: Tao Mobile: 090-3742-9768 Email: bousei@harada-tekkou.co.jp Please feel free to contact us for consultations or estimates.
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Our company manufactures products tailored to the diverse needs of various sites. We respond to customer requests with our capabilities, advantageous location, and thorough quality and delivery management. You can trust us with everything from material ordering to can manufacturing, processing, surface preparation, and painting. Additionally, we have dedicated many years to research and development in rust prevention, establishing a solid technology and facilities as a "rust prevention department," and we also perform tasks such as paint stripping. Please feel free to contact us with any requests.