Knowledge

1. Inflexible opening and closing Some fire doors use improper sealing materials to hinder the opening and closing of the door leaf. The design gap be

The way that the sound wave transmits through the door is mainly the door leaf and the door gap. Therefore, to obtain a sound insulation door with hig

You may have noticed that fire doors come equipped with metal arms at the top of them. This is a rack and pinion door mechanism, which will ensure tha

Fire doors can be divided into wooden fire doors, steel fire doors, steel-wood fire doors, and other fire doors according to their materials. Wooden f

Everyone knows that fire doors have good fire performance. Generally, you can see them in large hospitals and shopping malls. There are many types of

An egress door is designed to allow an easy escape from a building in the case of an emergency or during an evacuation. But, the term egress door does

Fire doors are particularly important as the first level of home fire protection, but when you buy inferior fire doors, the fire doors are no longer f

Exit route doors must be unlocked from the inside. They must be free of devices or alarms that could restrict use of the exit route if the device or a

Fire doors are a type of door and window products that are often used and installed in public spaces such as supermarkets, aisles, etc. In addition to

When designing fire doors in buildings, designers should set fire doors in a reasonable manner based on the nature and type of the building, strictly

Hollow metal doors are metal, typically reinforced or galvanized stainless-steel doors, that are not metal all the way through. They consist of steel

When customers buy fireproof doors, sometimes they don't know whether these doors are really fireproof, because it is difficult to make corresponding