The setting of fire doors in architectural design generally only clearly stipulates the requirements for the grade of fire doors, and does not specify the material requirements of the door. That is how to purchase in the actual configuration? Many users who purchased such products for the first time are confused. Where to use wood fire doors and where to use steel fire doors. Zonle wooden door will tell you: Although the relevant building codes do not give clear requirements for the selection of fire door materials, there are still certain requirements in the actual configuration. Generally speaking, wood fire doors are generally used indoors and steel fire doors are mostly used outdoors, but this is not the case. , just the vast majority. Wooden fire doors are generally used indoors mainly at stair entrances, where wooden class B fire doors are used; the pipeline wells are both strong and weak current wells, and wooden class C fire doors are used; the doors for crowded places and rooms, such as The doors of Internet cafes, cinemas, KTV private rooms and the firewalls in hospitals, schools and stations are made of wooden Class A fire doors. The parts where steel Class A fire doors are used include power distribution rooms, transformer rooms, elevator rooms, diesel generator rooms, boiler rooms, etc.; Class B fire doors are mainly used in control rooms, ventilation machine rooms, fire doors in warehouse stairwells, etc. ; Ventilation ducts, garbage ducts, and inter-connected doors in the power transformation and distribution room are all steel Class C fire doors. As mentioned earlier, the choice of fire door material is not clearly specified. The above list is only the common setting methods in the industry, and some places have different settings and use. In short, no matter which material fire door is selected, it must be according to the building And fire door specification requirements configuration.

1. Raw material problem: The actual raw materials used do not match the materials used in design or testing. Such as thin steel plate instead of thick steel plate, cold rolling instead of galvanized, no fire-proof insulation material filled, or honeycomb cardboard instead of aluminum silicate fiber cotton, even if the filling is not full, it is shoddy to reduce its production cost. The focus of the inspection is deviated. Filling material: A simple and practical method is to tap and listen to the sound. If the sound is dull, it means that there is filling in the door frame and door leaf. (Hinge hole, lock hole, latch hole, door closer sequencer fixing hole, upper and lower ventilation holes, process holes, etc.), at present, the filler for Class A and B fire doors on the market is white aluminum silicate Fiber cotton (different bulk density, grade A is above 200kg/m3, grade B is above 160kg/m3), grade C uses yellow rock wool. 2. The thickness of the door leaf: check whether the actual thickness of the door leaf conforms to the thickness of the door leaf in the test report. 3. Fireproof glass problem: It is often found on the construction site that insulating glass, thin fireproof glass with insufficient grade, or fireproof glass with poor lighting and excessive number of bubbles is used to pretend to be fireproof glass with high fire resistance. When inspecting, you can pick out a piece of glass at will, remove the seal on the upper corner of the glass to check whether there is a seal filled with fireproof liquid, and measure its thickness, which should be compared with the data on the fireproof glass test report.