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With the rapid development of industry, corrosion problems have become increasingly serious. I suffer an annual corrosion loss of more than 280 billion yuan, close to 4% of the gross domestic product. Japan’s annual corrosion loss is 9.2 billion US dollars, of which chemical corrosion loss is 5.2 billion US dollars, accounting for 56% of the total loss. According to the survey of the US National Standards Bureau, the US suffers an annual corrosion loss of more than 70 billion US dollars. In the Pearl River Delta, Yangtze River Delta, Southwest, Northwest and Central China, I have experienced serious acid rain, almost “ten spring rains and nine acidic lands”. According to the test of acid rain in Guangdong, the pH value is about 3.8 (note: acetic acid is 4). In addition, indirect losses caused by corrosion problems are difficult to calculate! In recent years, UPVC roof tiles have the advantages of fast installation and low cost, and have quickly occupied the market share.
4 layers ASA/PVC Roof Sheet
4 layers ASA/PVC Roof Sheet
4 layers ASA/PVC Roof Sheet
4 layers ASA/PVC Roof Sheet
The waste gas produced in the modern industrial production process, such as acidic, alkaline gases and metal smoke, oxides and corrosive gases, can cause serious corrosion to the color steel roof, especially in coastal areas and chemical industries. The continuous discharge of acidic and alkaline gases is transformed into acid rain and alkaline rain, which accelerates the corrosion of color steel plates! In addition, when the color steel plate is fixed, the accessories are not perfect, and sometimes there will be problems of water leakage from the screw holes, which not only seriously affects the use, but also brings great safety hazards! At the same time, self-tapping forms many “electrodes”, which accelerates the corrosion and rusting of color steel plates! 4 layers ASA/PVC Roof Sheet is a new generation of products, which is processed by advanced four-layer co-extrusion technology. The seven major advantages of the product are: no discoloration for ten years, weather resistance, excellent chemical resistance, low noise, low insulation, thermal insulation performance, 2-3℃ lower than color steel plate, excellent fire resistance, product application factories, steel structure factories, warehouses, agricultural and commercial markets, roof materials, such as market access, garages and slope projects. Especially in corrosive factories such as ceramic factories, chemical factories, dyeing factories, smelting factories, fertilizer factories, etc., the effect is particularly significant.