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Selection and Application of Structural Steel Materials for Aircraft Maintenance Hangars​

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 Aircraft maintenance hangars , as the core facilities for aircraft inspection and repair operations, must endure long-term exposure to large-span loads, extreme weather conditions, and complex operational environments. Consequently, stringent requirements are imposed on the strength, weather resistance, and stability of the structural steel materials employed. The judicious selection of suitable steel structural materials not only ensures the hangar's safe operation but also reduces construction and maintenance costs. Based on the functional requirements of different structural components within the hangar, commonly used steel structural materials can be categorised into three main types, each playing a critical role in hangar construction. I. Primary Load-Bearing Structure: The Core Material Supporting the Hangar's ‘Skeleton’ The primary load-bearing structure forms the hangar's ‘skeleton’, bearing the hangar's own weight, aircraft parking loads, and external forces s...

What is PC resistant board? Why do sunroom canopies use it?

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  First, what is PC board? Many people have a misunderstanding of PC board , that PC board is acrylic board, is a piece of ordinary plastic board, easy to yellow and become brittle. In fact, PC board and acrylic board is not the same at all! Acrylic sheet is made of methyl methacrylate monomer MMA polymerisation, PC sheet is a high-performance engineering plastics polycarbonate processed. In addition to the two translucency look about the same, the performance of raw materials are not the same, we do not want to get confused. Second, what are the characteristics of PC sheet? PC Sheet is a material with excellent light transmission properties, its 6MM thickness of the transmittance of up to 82%, similar to glass, it is difficult to distinguish. In addition, the material also has excellent impact resistance, compared with the same thickness of ordinary glass, plexiglass and toughened glass, its impact resistance is 300 times, 30 times and 20 times higher respectively. Even when a 3kg...