菱镁通风管道的尺寸主要由设计单位根据工程需要的通风量进行设计，也可根据客户的具体要求设计。
The sizes of magnesite ventilation ducts are mainly designed by the design units according to the ventilation volume required by the project, and can also be designed according to the specific requirements of customers.
菱镁通风管道的外形分圆形和矩形两种截面。管道的长一般为2～3m，如果圆形管直径和矩形管的边长大于1.5m时，管段长度可适当缩短。管段之间的连接方式有两种：一是法兰连接，一是承插式连接。
The shape of magnesite ventilation pipe can be divided into circular and rectangular sections. The length lizhu.37ix.com.cnshujun.37ix.com.cnfuheguann.37ix.com.cnwufangbus.07858.net tiexin.07858.net youxiang.07858.netof the pipe is generally 2-3 M. If the diameter of the circular pipe and the edge of the rectangular pipe are longer than 1.5 m, the length of the pipe section can be appropriately shortened. There are two ways to connect pipe sections: flange connection and socket connection.