The natural ventilation system is a relatively large-scale project on the factory floor. The roof smoke vent is installed and assembled by multiple components, which requires firm accessories for the combination and fastening of each component.

The connection between the base of the MCW roof smoke vent and the arc should be made of high-strength bolts ≥16mm; the connection of other parts should be made of galvanized bolts ≥10mm. Hole size should be accurate. Forcibly penetrating the bolt will damage the thread, change the torque coefficient of the high-strength bolt connection, and even the nut can not be screwed on. Therefore, it is emphasized here that the bolt hole should be freely penetrated.

If the MCW ridge ventilator is cut and reamed very irregularly, it will not only weaken the effectiveness and surface area of ​​the components, reduce the pressure transmission area, but also cause defects just now at the reaming. Therefore, the installation regulations of smoke vent rooflight must not use gas cutting reaming. The limitation of the link aperture should be based on the consideration of the limited load surface of the component and the friction transmission area, and the assembly bolts should ensure that the link is firm.

According to statistics, the total corrosion loss in each year can account for 2%-4% of the total products of the national economy. Therefore, in order to ensure that the service life of the roof skylight can be equal to that of the building, the coating process specified by the owner and design unit should be strictly implemented.