通风管道展开下料是当风管中的聚氨酯软管 PVC软管 隔离墩模具 u型槽模具 护坡模具 pvc输送带 尼龙输送带 天津除甲醛 北京除甲醛 一些零部件（管件）必须通过展开下料的方式进行加工才能制作完成时需进行的工作。其中的展开，即按管件设计施工图纸的规划，根据其实际大小将其平铺在板料表面。这项工作之所以重要，是因为其不仅直接关系到风管及其部件质量，也关系到风管材料的使用效率。故对其进行研究分析具有很重要的意义。
The unfolding and blanking of ventilation duct is the work that needs to be carried out when some parts (pipe fittings) in the air duct must be processed by unfolding and blanking before they can be made. The expansion is to lay it on the surface of the sheet according to the actual size according to the planning of the pipe design and construction drawings. This work is important because it is not only directly related to the quality of air duct and its components, but also related to the efficiency of air duct materials. Therefore, it is of great significance to study and analyze it.