What is a Double Steel Door?

Equipped with anti-theft lock, which can resist abnormal opening under certain conditions for a certain period of time, and has certain security protection performance and meets the corresponding anti-theft security level of the door.

According to the anti-theft security level, it is divided into 4 levels, which are Levels A, B, C, and D. From high to low, they are decreasing in order.

Mainly reflected in the intelligence of its key components (locks), including various electronic anti-theft locks that have begun to be widely used, such as

The security door is mainly divided into five types from the material: steel,

There are generally four specifications of national standard doors, with two heights of 2050mm and 1970mm, two widths of 860mm and 960mm. The combination can be: 2050 * 860, 2050 * 960, 1970 * 860, 1970 * 960, and the height of 2050mm is For a door frame with a total height of 2.05 meters, if the user's door opening height is 2070mm, he can buy a height of 2050mm, and a margin of about 20mm is required, which is relatively easy to adjust during installation. There are two types of doors: outside and inside, but the direction of the door is determined outside. Directions are divided into: left outside, right outside, left inside, right inside. Distinguish the opening direction by the hinge (hinge) side. As an example, a left-opening is outside: when a person faces the doorway outdoors, the hinge (hinge) is left-opening on the left-hand side, and so on.

The "General Technical Conditions for Security Doors", which has been implemented for 8 years, will implement the new national standard from April 1, 2008. The new national standard divides the anti-theft security level of anti-theft doors into four levels: "A", "B", "C", and "D". The security performance of anti-theft doors with different anti-theft levels is different. Less than 6 minutes.

D-class security door sign

The new standard is compulsory for clauses related to the security performance of anti-theft doors. According to the indicators such as the length of anti-damage time and the thickness of the board, the standard classifies the security level of anti-theft doors. "," B "," C ", and" D ". The alphabetical codes of the new anti-theft security level are "J", "Y", "B", and "D", respectively. A is the highest level and decreases accordingly.

The security performance of anti-theft doors is different for different anti-theft levels. Such as anti-damage time: Class A security door must not be less than 30 minutes, Class B not less than 15 minutes, Class C not less than 10 minutes, Class D must not be less than 6 minutes; the number of lock points between the door frame and the door leaf, , B, C, D security doors should be no less than 12, 10, 8 and 6 respectively; and the thickness of the steel plate of the door frame should be 2mm, 2mm, 1.8mm respectively And 1.5mm. Consumers can choose the security door they want according to their needs.

According to the new standard, the locks of anti-theft doors should be able to prevent damage within the tamper-proof time. Open the door leaf; the effective length of the main locking tongue of the anti-theft door should not be less than 16mm, and there should be a locking device for the locking tongue.

The new standard also adds content that can help consumers identify the authenticity of the security door, which requires that the security door should have a permanent fixed mark. The anti-theft door mark is composed of 3 parts, and the symbol is a pinyin letter. From left to right, it is the anti-theft security door code (FAM), anti-theft security level, and enterprise-defined features (including the enterprise code and product code). Among them, the anti-theft security level mark is permanently fixed at the upper corner of the inner hinge side, and the height from the ground is 1600mm ± 100mm.

Security Door Marking Example

In the new standard, nearly ten related doors such as security doors, security doors, home doors, security doors, protective doors, and steel doors are all included in the D level of security doors. Yang Yucai, an investigator of the Xi'an Office of Technical Defense, said that in the new standard, no matter what the product itself is called, it is included in the "D" level and must be produced in accordance with the "D" level. According to the new standard, all entry doors, regardless of material or name, will be included in the security door ranks, and then re-divided into Class A, B, C, and D according to the requirements of the new standard, and all non-standard doors and Interior doors are called interior doors. Therefore, security doors and interior doors will represent all types of doors in the market.

level	Door frame steel thickness	Door leaf outer panel thickness	Door leaf inner plate thickness	Degree Lock Points	Tamper-proof open time	Letter representation
Class A	2mm	1.0mm	1.0mm	12	30min	J
Class B	2mm	1.0mm	1.0mm	10	15min	Y
Class C	1.8mm	0.8mm	0.8mm	8	10min	B
Ding	1.5mm	0.8mm	0.6mm	6	6min	D

Security door security knowledge

Anti-theft security doors can be divided into three types: flat-open security doors, fence-type security doors and fence-type folding doors. But nowadays, mainly used in residential as split-door doors are flat-open anti-theft security doors, and fence-type anti-theft security doors are mainly used in conjunction with building intercom electric control system products as building intercom doors for residential or residential walkways. Sliding doors are mainly used in small commercial shops.

Daily maintenance of security door

1. When the key cannot be fully inserted into the keyhole when opening the door, if it is in winter, first check whether there is ice in the keyhole; if it is in other seasons, check whether there are foreign objects in the keyhole.

2. I heard the sound of metal friction when opening and closing the door. Try dripping a little lubricating oil on the hinge of the anti-theft door. If it does not work, you can find a professional repairman.

3. When the anti-theft door is closed, the resistance is too large, and a little lubricating oil can also be applied to the movable tongue.

4. When installing the anti-theft door, it is necessary to carefully fill the cement so that the door frame and the wall are effectively and tightly connected. This can also maintain a reasonable cooperation between the door body and the door frame and do not worry about deformation for a long time.

5. If it is difficult to insert the lock cylinder when opening the door, you can apply a little graphite. Or use a pencil lead to insert the lock core.

6. In the severe cold area, the problem of wintering of the security door is also very important, because the temperature difference between indoor and outdoor in the severe cold area is very easy to dampen the lock core of the security door when the hot and cold water flows, and then freeze. The situation happened. Before the winter arrived, two drops of antifreeze oil should be dripped into the lock cylinder, and then washed with gasoline or diesel after the winter. Do not use vegetable oil as a lubricant for the lock cylinder.