The protective plate of the roof vent is the peripheral plate or the outer protective plate, and generally uses color profiled steel as the material (that is, color steel plate). and it is the intuitive appearance of the natural ventilator. It will be affected by natural weather all year round, so it needs to have anti-corrosion and anti-corrosion functions in order to be able to face the harsh and harsh natural conditions. .

The length of the outer shield of the ridge ventilator needs to be determined according to the distance between the frame of the streamlined natural vent, and its width should be determined according to the external dimensions of the frame. The outer guard plate must wrap the frame, and the natural ventilator must be wrapped tightly and solidly to achieve an excellent windproof effect. 

When the width of the natural vent is determined, the steel required for the factory area is pulled and cut on the shearing machine. After cutting, use the color steel plate pressing machine to press and shape, so that the color steel plate has raised parts, so that it can have better strength. After pressing the outer guard plate into shape, drill holes on its side, for the follow-up To prepare for the installation work.