What is a three proof door? Which three defenses do the three proof doors refer to

<> three proofs in the door refer to: anti-theft, fireproof, cold-proof. 1. Anti-theft:

This is the basic function of any door, the door lock on the door should be able to prevent drilling, which has a certain technological content. Bijian 2. Fire prevention: If the door is made of metal materials, it will prevent the spread of fire in the event of a fire, and it also has a good effect in blocking smoke.

3. Cold-proof. Under normal circumstances, the door body contains insulation material confession pants, in the winter environment, there is a certain cold-proof effect of the Xiang family.

Summary. Hello dear, I am happy to serve you, through the official query shows, the standard of the three-proof door A is: anti-theft, this is the basic function of the door, the door body can be anti-prying, using general hand tools, can not be pried open within 15 minutes.

The door lock can be drill-proof and has a certain scientific and technological content. Fireproof, the door body is made of metal, in the event of a fire, within a certain period of time, it can prevent the spread of open flames and smoke and prevent the spread of fire. Cold-proof, there is thermal insulation material in the door body, and if you install the three-proof door, you can no longer install an ordinary door.

Hello dear, I am happy to serve you, through the official query shows that the banquet cha fan, the standard of the three-proof door A is: anti-theft, this is the basic function of the door, the door is not or the body can be anti-prying, using general hand tools, can not be pried open within 15 minutes. The door lock can be drill-proof and has a certain scientific and technological content.

Fireproof, the door body is made of metal, in the event of a fire, within a certain period of time, it can prevent the spread of open flames and smoke and prevent the spread of fire. Cold-proof, there is a hail in the door with insulation materials, and the installation of the three-proof door can no longer be installed with ordinary doors.

Pro, the "three-proof door" is also known as the folk, the entrance door of fire prevention, anti-theft and noise-proof, in essence, is the officially recognized wooden fire door, but it is still different from the wooden fire door of Pu Li Yantong (such as: the public part of the aisle door, the machine defense door, and the staircase door, the tube well door) has a different essence of which silver. In the appearance, structure, lock application of the principle and shape of the wooden anti-theft door, the use of high-tech fireproof board as the material on the selection of fireproof materials, so as to relatively improve the performance of the wooden fireproof door anti-theft and sound insulation and so on.

Hello dear, I am very happy to serve you, through the official inquiry shows, the standard of the three-proof door is the door (fireproof, cold-proof, anti-theft), the fireproof shed is the grade B and the early level, the fire resistance limit is 1 hour, and the cold-proof requirements meet the heat transfer coefficient 1.

Dear, I'm glad to answer for you, the standard of the three-proof door A is the entrance door of fire and theft and noise, which is essentially the officially recognized wooden fire door, but it is still different from the ordinary wooden fire door (such as: the passage door of the public branch mold royal part, the machine defense door, and the stair door, the tube well door) and has a mutual essence of the difference. In the appearance, structure, locks apply the principle and shape of the wooden anti-theft door, and the high-tech fireproof board is used as the material on the fireproof material, so as to relatively improve the anti-theft and soundproof performance of the wooden fireproof door.

Anti-theft This is the basic function of the door, the door body can be anti-prie, using general hand tools, can not be pried open within 15 minutes. The door lock can be drill-proof and has a certain scientific and technological content.

Fireproof, the door body is made of metal, in the event of a fire, within a certain period of time, it can prevent the spread of open flames and smoke and prevent the spread of fire.

Cold-proof, noise-proof.

There are thermal insulation materials in the door body, cold-proof and noise-proof, and the three-proof door can no longer be installed with ordinary doors.

The relevant laws and regulations of the state (hereinafter referred to as the official) do not have the "two doors" and "three doors" at all, only a separate fire door, anti-theft door, explosion-proof door, noise-proof door (or soundproof door), moisture-proof door, waterproof door, thermal insulation door, etc., the relevant departments of the state have carried out a type inspection for some categories, and the relevant accreditation certificate has been given to the qualified ones, and has never been given to a manufacturer or a certain type of door to inspect and give "two doors", "three doors", "four doors" and other doors for recognition. The reason is that after the National Fire Inspection Center conducts type inspection and approval of fire doors, the National Complete Testing Center will no longer issue relevant anti-theft approval certificates for the performance of anti-theft doors, and vice versa. Therefore, the official has never recognized the term "two-defense door" and "three-defense door".

So where do the "two-defense door" and "three-defense door" come from? This kind of reference mainly comes from the folk saying, "two doors" generally refers to steel fire prevention, anti-theft doors, "three doors.""Generally, it refers to wooden fireproof, burglar-proof and noise-proof doors.

The standard three-proof door has the following three defenses:

1. Anti-theft:This is the basic function of the door, the door body can be anti-prie, using general hand tools, can not be pried open within 15 minutes. The door lock can be drill-proof and has a certain scientific and technological content.

2. Fire prevention. The door body is made of metal, which can prevent the spread of open flames and smoke for a certain period of time in the event of a fire, preventing the spread of fire.

3. Cold-proof. There is thermal insulation material in the door body, and if you install the three-proof door, you can no longer install an ordinary door.