Replacement of chimney lightning rod, removal and elevation of chimney top opening

Replacement of chimney lightning rod, removal and elevation of chimney top openingThe technical standard for processing at the level of Hongshun Construction Engineering Co., Ltd. is the same as the first half of Sa2 requirements, but the defect is limited to no more than 5% of the surface per square meter, which may include slight shadows; Minor discoloration caused by defects and rust; Oxidation scale and paint defects. Sa level is equivalent to SSPC-SP5 level in the United States, which is a high processing level in industry, also known as white cleaning level (or white level). The technical standard for Sa processing is the same as Sa2.5 level, but 5% of defects such as shadows, defects, rust, etc. must not exist. With the development of modern industry, the emergence of a number of emerging industrial fields and the construction of many modern engineering projects have put forward higher requirements for the environmental resistance and service life of anti-corrosion coatings. The commonly used anti-corrosion coatings can no longer meet these needs. The concept of "Heavy duty Coating" proposed by people generally refers to a combination of primer and topcoat coatings used in harsh corrosive environments.

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Simply put, heavy-duty anti-corrosion coatings are coatings that have a longer service life and can adapt to more demanding environments. Heavy duty anti-corrosion coatings can generally be used for 10 or 15 years in chemical atmospheric and marine environments, and can be used for more than 5 years in acid, alkali, salt, and solvent media under certain temperature corrosion conditions. The surface should be free of visible grease, dirt, oxide scale, rust, paint coatings, and impurities. Same as St but should be treated more effectively than St2, the metal substrate has a metallic luster. The surface should be free of visible grease, dirt, loosely attached oxide scales, rust, paint coatings, and other impurities. The surface should be free of visible grease, dirt, oxide scale, rust, paint coatings, and impurities, and residues should adhere firmly. The surface should be free of visible grease, dirt, oxide scale, rust, paint coatings, and impurities, and residual traces should only show slight dots or stripes. The surface should be free of visible grease, dirt, oxide scale, rust, paint coatings, and impurities.
The watch has a uniform metallic color. There are various types of anti rust pigments used in anti-corrosion coatings, which react with film-forming agents to form dense anti-corrosion coatings; Pigments are alkaline substances that form an alkaline environment when dissolved in water; Water soluble components reach the metal surface and passivate it; Reacting with acidic substances to make it lose its corrosive ability; Water soluble components or reaction products with film-forming agents dissolve in water to become anti-corrosion components, etc

Replacement of chimney lightning rod, removal and elevation of chimney top opening