Wooden materials used are generally very difficult to fire door burning wood, of course it will fill some insulation materials, finally cooperate with some hardware accessories, is composed of a refractory performance is very outstanding fire door, and then what are the specific technical indicators fire door, at ordinary times? What are the requirements, the following is the fire door manufacturer to cover it for us. 

In the first place in the middle of the door leaf and door frame when using the fire door will have a gap, not less than 12 mm, because the door is closed when need to have a certain gap space, the size of the design has a regulation, when making must be in strict accordance with the size, if there is a larger error is unqualified products, because the unqualified products will not be able to normal installation, basically all the gap is not greater than 3 mm, only door leaf and ground cracks allowed within 9 mm. On the materials used in fire doors because the structure is relatively simple, so basically adopts fireproof material, generally a fire door can be normal use of more than five years, of course it also depends on when you purchase, the quality of the famous fire door manufacturer production products fire will be particularly long time, so buy must pay attention to himself. Fire door at the time of design and installation, it is very flexible, can according to customer's specific requirements are related to design style, so a lot of high-grade residential will choose this way of private custom.

Finally, we discuss the production cost and use cost, natural class a fire door with good effect of the cost would be higher than that of class b fire door, so the quality mainly depends on the use of material, the material, the better effect is more outstanding.