2020-09-16

The difference between Class A fire door and Class B fire doorDue to the inevitability of fire protection, fire doors are used more and more around us. So how do we distinguish the grades and differences of fire doors? In 2009, the country had a new national standard for fire doors, which divided th

2020-09-11

The function of the fire door closer1. It needs to have the function of automatically stopping the door after opening the door.2. Buffer function, the buffer is generated after the door is opened quickly to a certain position, and the buffer force and range can be adjusted according to the use requi

2020-09-08

The method and working principle of fire door closerAs the name implies, the door closer is used to close the door. When a fire occurs, the fire door will automatically close after someone pushes the door open and runs out. It is a very practical and indispensable component installed above the fire

2020-07-28

The difference between fire door and fire shutterFire-fighting facilities are an important guarantee for a unit to improve its ability to resist fire. Maintaining its good condition is related to whether it can predict fire in time, whether it can be effectively controlled and eliminated in time, an