建筑安装工程中电气预埋管弯头的煨制质量如何 ,直接关系到下一步敷设电缆顺利与否。电气预埋管煨弯方法很多 ,这里介绍一种简易实用的方法—火焰煨弯。以煨制管径ＤＮ10 0的电气预埋管为例 ,步骤如下。1　支炉选一处平坦宽敞的地面 ,挖一个长 1.5ｍ、宽 0 .5ｍ、深 1ｍ的土坑 In the construction and installation project, the quality of the elbow of the electric pre-embedded pipe is directly related to the smoothness of laying the cable in the next step. There are many ways to bend an electrical pipe. Here’s a simple and practical method—a flame bend. Take an electric buried pipe with a diameter of DN10 0 as an example. The procedure is as follows. 1 Furnace choose a flat and spacious ground and dig a pit of 1.5m in length, 0.5m in width and 1m in depth