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Anonymous users2024-01-24Fire door - refers to the door is equipped with specially treated materials, which can resist the ablation of open flames for a certain period of time without deformation and smoke burning. Anti-theft doors are not much to explain, based on the needs of the market, now many large manufacturers in the door industry have produced special fireproof and anti-theft doors, a door with two functions. As for the fingerprint lock door symbol does not meet the fire requirements, it has nothing to do with this fingerprint function, you can look at the inspection report of this kind of door, whether it mentions that it has a fire prevention function.
Hello, if the size of the fire door does not meet the requirements, then the fire department will require rectification, which does not constitute a reason for you to check out.
If there is a defect in the performance of the obligations of Gujia Door, you can refuse to accept it and ask the manufacturer to compensate for economic losses. The manufacturer requires you to pay for the freight, which has no basis in law. But the cost of litigation is not low, and your matter is not big, so it is recommended to negotiate a settlement.
The better ones are filled with polyurethane foam, some are made of rock wool, and some are made of straw and cardboard.
Filling bean stone concrete can obtain higher strength and better waterproof performance, but the construction is relatively difficult, and it is easy to use dry hard cement mortar for filling. It's up to you.
The high-grade ones are foamed with polyurethane, and the low-grade ones are made of honeycomb paper.