图纸是工程技术人员表达设计意图、交流技术思想、指导生产的重要技术文件,是每一个管工必须掌握的工程界的“语言”。只有具备相当的识图能力,才能科学地、合理地制定施工方案,完成安装任务。提高识图能力和看图速度可以归纳为以下4个方面。一、视图关系应知道在工程制图中将立体的正面投影、水平投影和侧面投影分别称为主视图、俯视图、左视图。3个视图之间的投影关系为:主视图与俯视图,长对正;主视图与左视图,高平齐;俯视图与左视图。宽相等。由此可知:主视图反映 Drawings are important technical documents for engineers and technicians to express their design intent, communicate technical ideas, and guide production. They are the “language” of the engineering community that every supervisor must master. Only with considerable ability to map, can we formulate construction plans scientifically and reasonably and complete installation tasks. To improve the ability to read maps and speed to see pictures can be summarized into the following four aspects. First, the view relationship should be known in the engineering drawing three-dimensional front projection, horizontal projection and side projection are called the main view, top view, left view. The projection relationship between the three views is: main view and top view, long alignment; main view and left view, high flush; top view and left view. Width equal. It can be seen that the main view reflects