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The importance of material selection for compressed air pipelines

2018-07-25View Original

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This post was last edited by 955559 on 2018-8-7 at 22:47. The material choice for pipes is crucial. The atmosphere contains corrosive gases, water vapor, hydrocarbons, and other impurities; there are approximately 140 million solid particles per cubic meter of air. More than 80% of these particles have a diameter of less than 2μm, so they can easily pass through air compressors and silencing filters and enter the compressed air system. Air containing various impurities passes through a simple filter before entering the air compressor for compression. The high temperatures and oxidation that occur during gas compression lead to a decline in the quality of the compressor’s lubricating oil, which becomes highly acidic. When these solid particles, along with the oil and water vapor present in the compressed air, enter the air distribution system, the use of traditional galvanized or carbon steel pipes results in corrosion of the inner walls of those pipes. This is because iron has highly reactive chemical properties that make it prone to rusting; when iron comes into contact with air, it reacts chemically with the oxygen in the air, causing the molecules on the surface of the iron to turn into iron oxide—rust. The surface of iron exposed to air continues to oxidize and rust, making the iron soft and loose.   Over time, ordinary carbon steel pipes naturally develop corrosion and impurities that accumulate inside them. The ultimate result is corrosion and perforation of the pipes (including at the weld sites), leading to leaks. Polluted air causes serious damage to pneumatic equipment, pneumatic instruments, and the quality of end products, increasing the costs associated with repairing system equipment; moreover, the cause of these leaks results in significant financial losses.   Practice has shown that bulky, polluting, and prone to leakage seamless steel pipes as well as galvanized pipes are gradually being phased out. PVC pipes, which pose various safety risks, are also moving away from use in this industry. In their place is the new FSTpipe – a high-performance aluminum alloy compressed air pipeline. Thanks to its superior design, materials, and manufacturing processes, it ensures the delivery of high-quality, consistent compressed air, thereby protecting the safety of end-users and maintaining stable output quality. Its high-performance O-rings also help to prevent leaks

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