Please provide the Chinese content to be translated.Steel StructureInsulation material filled within the engineering layer(Typically, colored steel sandwich panels are used.)The soundproofing effect is expressed in decibels as the difference in sound intensity between both sides of the steel structure engineering layer. The soundproofing effect is related to the density and thickness of the soundproofing material. It prevents rain from渗入金属屋面板内部。

Before constructing the Lanzhou steel structure project, the factors to consider in the design of the steel structure are: floor area, building height, protective structures, door and window design, ground level, and suitability. Consider the essential factors for structural safety in the construction of steel structures; this is indispensable and a requirement of the times for the construction of steel structures. If you find it too麻烦, it's advisable to find a larger steel structure company. They take care of design, manufacturing, and installation, making it hassle-free.