Basic knowledge of security door

Whether the security door is safe or not is directly related to our physical and mental safety and property safety. Therefore, it is necessary to spend manpower,

Whether the security door is safe or not is directly related to our physical and mental safety and property safety. Therefore, it is necessary to spend manpower, material resources and financial resources to buy a high-quality security door. Next, follow my footsteps and unveil the mystery of the security door step by step.

First, the security level of security doors

The legal production and distribution of security doors shall meet the following two conditions:

(1) must have a production and distribution license issued by the technical prevention management office of the local public security bureau.

The production and distribution of security doors must be inspected by the product quality supervision and inspection stations authorized by the regional technical supervision bureau and the public security organs according to law. The security doors produced by regular manufacturers should have safety grade certificates.

Second, consumers should choose the level reasonably according to the specific use and anti-theft requirements of security doors.

Third, the classification of security doors

Specific thickness: the thickness of steel plate determines the impact strength. Door frame thickness: Grade A, B, P and D are 2mm, 2- 1.8mm, 1.8- 1.5mm and 1.5mm respectively.

Specific fillers: aluminum silicate rock wool and aluminum foil usually used for class A security doors. Class B security door is made of rock wool and polyurethane foam. Honeycomb paper is often used for C and D filling in the market.

Compared with the lock, the anti-theft level of the A-class anti-theft door lock is B, that is, the advanced protection level; For B, C and D security doors, the security level of the lock is A, that is, the general protection level.

Four, security door lock cylinder standard

Class A is the most primitive and unsafe lock core. The owner's key is flat, with only a single-sided single-row bullet slot, and some cross keys also belong to Class A. This lock can be opened in about two or three minutes, and skilled hands will be faster.

Class B is a relatively safe level. From the key point of view, it is a double-sided double-row bullet slot. If such a lock has tools, it will take a skilled worker about 10 minutes to open it.

Super class B lock is the safest level at present. From the key, there is a double-sided double-row bullet slot with a blade or curve next to it. This kind of lock core design technical standard needs to be opened for more than 280 minutes, and a skilled locksmith needs one hour.

Classification of manufacturing materials for anti-theft doors

At present, the common security doors are mainly divided into four types in terms of materials: iron doors, stainless steel doors, aluminum alloy doors and copper doors. They have their own characteristics in quality and efficiency.

Steel security door: it can be said that it is the most common security door material on the market, which is used by ordinary people. Most of the familiar security doors belong to this series. This kind of door is cheap and reasonable, and its sales account for more than 90% of the total market sales. The thickness of qualified steel security door frame should be above 2mm, the thickness of door body should be above 20mm, and the weight of door should be above 40kg.

Disadvantages: the external lines are hard, so it is difficult to integrate with modern interior decoration.

Stainless steel security door: high security efficiency, durability and stronger security. Compared with ordinary iron or steel mixed security doors, stainless steel doors have the characteristics of lasting bright color and never rusting, and more importantly, the uniqueness of products determines them.

Disadvantages: stainless steel security doors are mostly silvery white. First of all, it gives people the impression that the appearance and color are somewhat monotonous, which makes people feel stiff.

Aluminum alloy security door: the aluminum alloy material used in this door is different from the ordinary aluminum alloy doors and windows we see. High hardness, bright color, decorated with patterns and patterns, giving people a magnificent feeling, belonging to the mid-range security door. Because this kind of door is not easy to fade and corrode, it also has a certain consumer group.

Disadvantages: some doors are hinged with rivets and cannot be disassembled, and there is friction noise and metal noise in the door opening and closing.

Copper security door: Most copper security doors combine traditional anti-theft with entrance doors, with advanced styles and good fire-proof, anti-corrosion, anti-prying and dust-proof performance. In terms of material, the copper security door is the best.

Disadvantages: In terms of price, it is also the most expensive. The basic price that can be seen in the market is about 5000 yuan, and the most expensive one is 10000 yuan. Moreover, the appearance color is not as bright as other security doors, and it looks more rigid.

Introduction to related knowledge of anti-theft door

How to repair the sinking of the security door?

If the screw on the door hinge is loose, lock the screw when the door is lifted. Generally, it is best to loosen all the screws of the door, then lift the door to a suitable height, and then close all the screws.

If the quality of the door hinge itself is poor and the material is thin, and the hinge is somewhat deformed under the gravity of the door, then replace it with a hinge with better quality and thicker material.

If the door frame itself is deformed, it will be more troublesome to maintain. You can call a property manager or other professionals to repair it. Door information reminds us that most A-class security doors are hinged doors, because A-class security doors are heavy, and the hinged doors have better structural support, which can better prevent the doors from sagging.

How to change the lock core of security door?

1. Find the position of the lock cylinder screw hole and unscrew the lock cylinder screw.

2. Turn the key slowly until it reaches a certain position, that is, when the fork is in the lock core slot, the whole lock core can be pulled out of the lock body.

3. At this time, measure the size of the existing lock cylinder.

The common lock core is round head, with a diameter of 17mm, a width of 10mm and a height of 33mm.

If your lock cores have the same specifications, then determine the length of L 1 and L2 and the distance between the screw hole on the lock core and both ends.

Replace the lock cylinder, then tighten the lock cylinder screw, and then install the inner and outer handles. There are two screw holes in the handle in the room. Just tighten the screws.