When the house is finished decoration or when renting, for security reasons, people do not trust the flow of the key, generally people will replace the anti-theft door lock core, and now on the market security door for the lock cylinder style, type, material, The functions are different, so that the price of the anti-theft door to change the lock core is relatively large, then how much money the security door for the lock core, anti-theft door for how to change the price of the lock, how to change the lock is the problem people have to consider. With the progress of society, the level of process technology has also been greatly improved. There are a wide variety of styles for anti-theft door locks on the market, which makes the price of anti-theft door changeable cylinders far from one another. How much does the security door change the lock core ? Let's follow me together to find out.
Anti-theft door lock cylinder type
Anti-theft door full name anti-theft security door, the latest national standards "anti-theft security door general technical conditions", the anti-theft door lock core level is divided into: A, B, C, D four levels.
The door frame should be selected as 2.00 mrn, 1.80 mm, l according to the levels of B, C, and D for security. 50 mm. The thickness of the outer panel and inner panel of the door leaf is expressed in the form of "outer panel/inner panel", and the levels of the B, C, and D are classified according to security. Select 1. 00 mm/1. OO mm, 0. 80 mm/0. 8O mm, 0. 80 mm/0. 6 mm. General household security doors are mainly Class C and Class D. The higher the class, the higher the security performance.
Anti-theft door lock level standard
In addition to the door itself, the door lock is also the key to anti-theft, the country will be classified into three levels of anti-theft door lock cylinder:
Grade A is the most primitive and unsafe lock core. The owner’s key is flat. There is only one single row of bullet slots. Some cross keys also belong to Class A. Such a lock can be opened in about two or three minutes. Faster.
Class B is a safer class. From the point of view of the key, it is a double-sided double-row bullet bay. If there is a tool for such a lock, the skilled worker must open it for about 10 minutes.
Super B-level lock is currently the safest level, from the perspective of the general double-sided double-row bullet slots, there is a blade or curve next to it, so that the lock cylinder design technical standards to open more than 280 minutes, the general skilled master of the lock also It takes a few hours.
Anti-theft door lock core level distinction
Thickness
The thickness of the steel plate determines the impact resistance. The thickness of the door frame cold-rolled steel plate: A, B, B, and B are respectively 2 mm, 2-1. 8 mm, 1.8-1. 5 mm, and 1.5 mm. The outer thickness of the door leaf: Grade A, B, and B were 1 mm, 1 mm, 0.8 mm and 0.8 mm, respectively. Thickness of the inner panel of the door leaf: Grades A, B and B were 1 mm, 1-0. 8 mm, 0.8 mm and 0.6 mm, respectively.
Filler
The State requires that the worst security doors should be filled with honeycomb paper. The Grade A doors are different according to the brand. Some are aluminum silicate rock wool (fireproof cotton), some are aviation honeycomb aluminum, and others are aluminum foil. Class A security doors are usually made of aluminum silicate wool and aluminum foil. Aluminum silicate rock wool has very good heat preservation, fireproof and sound insulation properties. Aluminum foil is light weight, corrosion resistant, non-toxic and odorless, with good thermal conductivity, heat resistance and low temperature resistance. Under normal circumstances, grade B anti-theft door is selected rock wool and polyurethane foam. The advantage of rock wool is that it has good flame retardancy and is a poor conductor of heat. Polyurethane foam is filled with no gaps and the adhesive is strong after curing. Shock resistance, no cracking after curing, no corrosion, no shedding, ultra-low temperature thermal conductivity, heat-resistant. Highly efficient insulation, soundproofing, waterproof and moisture proof after curing. In the general market of C- and D-grade filling, honeycomb paper is used, and there is basically no insulation, fireproof, and sound-insulating properties.
Than locks
Anti-theft lock is the most important part of the door, and the performance of the anti-theft lock is directly related to the security of the door. The anti-theft door produced by regular manufacturers will have a “security level imprint†in the top left corner of the door. Class A anti-theft door locks with anti-theft level B, that is, advanced protection level; and B, C, D-class anti-theft door, the anti-theft door lock core anti-theft level A, that is, ordinary protection level. The tamper-proof time is obviously different because of different levels. Grade A is not less than 30 minutes, Grade B is not less than 15 minutes, Grade C is not less than 10 minutes, and Grade D is not less than 6 minutes. At the same time, observe the number of lock points between the door frame and the door leaf. The security doors of Class A, B, C, and D should be no less than 12, 10, 8 and 6 respectively.
Anti-theft lock core selection skills
When selecting the anti-theft door lock cylinder, everyone often falls into a misunderstanding that the heavier the cylinder and the key are. Actually, the following describes some tips for picking up the anti-theft door lock cylinder.
First, look at the surface treatment of the lock cylinder, the poor surface of the lock cylinder is generally rough, and the good texture and light sensitivity of the lock cylinder are better.
Secondly, look at the number of rows of marbles. Generally speaking, the single-row marbles commonly used in the market are called A-level locks. The opening ability is weak, and the anti-drilling, anti-smashing, and anti-interruption abilities are weak. marble.
Third, looking at the key shape, the internal structure of the lock cylinder can be intuitively reflected from the key.
Security door change lock cylinder method
1. Find the position of the lock screw hole. Unscrew the lock cylinder screw.
2. Rotate the key slowly, and at a certain position, that is, when the fork is in the lock cylinder groove, the entire lock cylinder can be pulled out of the lock body.
3. At this point, measure the size of the current cylinder.
The common cylinder, that is, the diameter of the round head is 17mm, and the width of the small head is 10mm. Height is 33mm.
If your cylinder specification is the same, then determine what the length of L1 and L2 is.
After replacing the lock cylinder, tighten the lock cylinder screw and install the inner and outer handles. There are two screw eyes on the handle in the room.
How much money for security door replacement lock core
Since it is for safety, it is not free to buy a low-priced lock cylinder, but to choose a security cylinder that is suitable for its own security door, and the price of the security door is moderate, so that both safety and economy can be taken into account.
Anti-theft door for the lock core, which should be based on the quality of the lock cylinder to set the price, replace the home use of the D-class anti-theft door lock core is relatively cheap, generally about 90 to 120 far, especially good there are more than 200 yuan.
Edit summary: The above is the security door to replace the lock core how much money security door to buy positive solution: do not anti-theft related to the quality of the lock core, bought a lock core if you do not change the anti-theft lock core, you must ask for professional change Lock cylinder personnel to change, so that there is protection, generally let the master to change the anti-theft door lock core price in tens of dollars, are all people can afford the price.
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