As people’s safety awareness increases, anti-theft doors have gradually entered more and more homes. There are a dazzling array of anti-theft doors on the market now, with varying quality. Paper bag scandals have also been exposed frequently in the industry, leaving consumers even more confused as to where to start. As the first line of defense in your home, how should you evaluate the quality of security doors? What should you pay attention to when buying security doors?
Most of the common anti-theft door materials on the market are made of steel, but there are also anti-theft doors made of other materials, which can be divided into five types: steel, stainless steel , copper, steel-wood structure and aluminum alloy.
Steel Door
Advantages: The most common, large market share, low and reasonable price.
Disadvantages: The exterior lines are hard and difficult to integrate with modern interior decoration.
Copper Door
Advantages: High security , highly practical, highly aesthetic, and a symbol of status.
Disadvantages: expensive, relatively rigid color.
Stainless steel door
Advantages: strong, high strength, not easy to damage, not rusty, anti-aging , anti-corrosion and other advantages, the appearance is bright and clean, luxurious, elegant, high-end, and stylish.
Disadvantages: monotonous color, relatively stiff, difficult to coordinate with the surrounding environment, relatively bulky, high price, only suitable for doors.
Steel-wood door
Advantages: Can be used indoors, with rich colors and diverse patterns
Disadvantages: The price is slightly more expensive, it is relatively heavy, and the requirements for door frames and hinges are also quite high.
Aluminum alloy door
Advantages: high hardness, bright color, not easy to fade, beautiful, Mid-range anti-theft door.
Disadvantages: air tightness deviation, high accuracy requirements, and certain installation skills.
Security door price
The issue of security door price cannot be generalized. Cheap ones have a purchase price of 300-500. Yuan (without installation), the good ones are 1,000-2,000. The price of the security door depends on the brand you choose.
Security door locking points
\”A\”, \”B\”, \”C\”, The number of locking points between the door frame and door leaf of \”D\” anti-theft door shall not be less than 12, 10, 8 and 6 respectively.
Destruction time of anti-theft doors
Different levels of anti-theft doors have different anti-destruction times. Class A The security door shall not be less than 30 minutes, the Grade B shall not be less than 15 minutes, the Grade C shall not be less than 10 minutes, and the Grade D shall not be less than 6 minutes.
Security door size
National standard doors generally have four specifications, with heights of 2050mm and 1970mm. , with two widths: 860mm and 950mm, the combination can be: 2050*860, 2050*950, 1970*860, 1970*950 , the height of 2050mm is the door frame with a total height of 2.05 meters. If the user\’s door opening height is 2070mm, you can purchase a 2050mm height. You need to leave a margin of about 20mm, which is easier to adjust during installation. Anti-theft doors can be divided into single-layer and thickened ones. Single-layer anti-theft doors are generally about 2 cm thick. Thickened anti-theft doors can be divided into three types: 3 cm, 5 cm, and 7 cm.
Anti-theft door level
The national standard for anti-theft doors is based on indicators such as the length of time the anti-theft door is resistant to damage and the thickness of the board. The product is secured against theft Full grade classification, the anti-theft security level has been revised from the original three levels of \”A\”, \”B\” and \”C\” to four levels of \”A\”, \”B\”, \”C\” and \”D\”, with A being the highest level. , in descending order, represented by \”J\”, \”Y\”, \”B\”, and \”D\” respectively.
Authenticity identification mark of anti-theft doors
The national standard for anti-theft doors stipulates that anti-theft doors should have permanent fixed marks . The anti-theft door mark consists of three parts. The mark symbols are pinyin letters. From left to right, they are the anti-theft safety door code and the anti-theft safety level. The anti-theft safety level mark is permanently fixed on the upper corner of the inner hinge, and the height is 1600mm±100mm from the ground. position. Therefore, this becomes a very useful method to identify the authenticity of security doors.
The saying that has been circulating on the Internet is that according to the \”National Mechanical Anti-theft Lock Standard\”, anti-theft door lock cylinders are divided into Class A lock cylinders, Class B lock cylinders and Super There are three levels of B level. But in fact, according to my country\’s \”Mechanical Anti-theft Lock\” \”Relevant regulations, the main technical indicators of mechanical anti-theft lock cylinders. So far, my country\’s national standards for lock cylinders are limited to two types: Class A and Class B. Super Class B lock cylinders are corporate standards proposed by lock manufacturers themselves. Generally refers to a lock cylinder that is safer than Class B. Super Class B lock cylinder is also called It is called Class C lock cylinder.
Technical indicators of Class A lock:
The anti-destructive opening time is greater than 15 minutes, and the anti-technical opening time is no more than 15 minutes. 1 minute.
Mechanical anti-theft door locks are divided into ordinary Protection level and high protection level are represented by A-level, B-level and C-level locks respectively. In order to prevent unlocking by thieves, it is best to buy high-level locks. In many residential areas, developers in order to save money. Cost: Class A locks are generally installed for residents. According to incomplete statistics, they are generally stolen. Most households use Class A locks.
Technical indicators of Class B locks:
The anti-destructive opening time is greater than 30 minutes, and the anti-destructive opening time is greater than 30 minutes. The technical opening time is more than 5 minutes, which can block most thieves.
The more complex the key, the safer the door lock. The quality of the lock cylinder of the anti-theft door can be determined by the number of rows of pins. Generally speaking, a multi-row pin lock is better than a single row pin lock. , and the multi-row invisible pin lock is better than the ordinary multi-row pin lock, just from the complexity of the key. From a practical point of view, the cost of Class B locks is much higher than that of Class A locks
Technical indicators of super Class B/C anti-theft locks:
The most. Advanced mechanical anti-theft lock, anti-technical opening time is more than 270 minutes
Super B-level/C-level anti-theft door locks are currently the safest. The key has multiple rows of grooves, multiple rows of pits, and a combined design of \”groove + pit + mysterious pattern\” in three dimensions. Some new varieties called \”four-dimensional keys\” add a plane, which greatly increases the difficulty of unlocking.The anti-theft opening time of some super B-level/C-level locks has been enhanced to nearly 400 minutes.
1. Check the performance and structure of the door lock
Select an anti-drilling lock, and the lock requires a three-position lock Closed structure, single door has 3 hinges, double door has 6 hinges, door leaf and door frame are equipped with hidden locks.
2. Check the number of locks on the door Drink The number of rods
The best choice The 2 locks each control the door with 2 levers.
3. Look at the thickness and area of the surrounding reinforcement plates
The core guard plate of the lock should be a cold steel plate with a thickness of more than 2 mm. The height of the core guard plate Not less than 500 mm. If it is a closed security door, the remaining cold steel plates should also be above 1.5 mm.
4. Look at the quality of the workmanship
The selection of security door materials is fundamental, and the quality of the production process is the key. Special attention should be paid to checking for welding defects.
5. Choose from the appearance design
The anti-theft doors on the market are divided into three categories: luxury, mid-range and ordinary. Users can choose their favorite type according to their own situation.
Common misunderstanding 1: Security doors with \”paper\” must be bad?
Security doors made of paper, listen It seems suspicious, but this phenomenon does exist! It’s a bit unbelievable that anti-theft doors are made of paper. Some anti-theft doors are made of steel plates, but they are sandwiched. The filling is filled with paper. You must ask: Can such a door be burglar-proof if the paper breaks? In fact, doors with \”paper\” inside are not necessarily bad.
Correct answer. : The use of honeycomb paper core plays a role in smoothing the surface of the door leaf
Tips: In addition to the two layers of steel plates and steel frames, the anti-theft door also has fillers of different materials inside. A kind of filler specially used for security doors. Some companies in the south use it more. Considering the thermal insulation effect, companies in the north mostly use rock wool and polyurethane foam as fillers.
Common misunderstandings. 2: The thicker the door, the better the anti-theft effect?
Most people think that the thicker the door, the better the anti-theft effect, but this is a bit misleading. Just like a person who looks fat may not be healthy. Some low-priced doors are very thick, but they are very light when opening and closing. The key to the anti-theft effect is the steel plate. Whether it is thick or not
Correct answer: The weight of the door depends mainly on the thickness of the door body
Tips: There is a good way to tell whether the steel plate is thick at a glance. , if the pattern on the door is deep and there are no pleats at the corners, it means that the steel plate is quite thick and the plate has good stretchability. Also, if the door feels heavy when you open and close it, the steel plate should be thicker.
Common misunderstanding 3: Door locks with high levels are more likely to break?
Currently, many old buildings still use cross-type locks. Flower locks are the easiest to open and the most unsafe. During the decoration process, in order to reduce costs, A-level locks are mostly used, which greatly increases the potential for anti-theft. Some people think that the door locks are more complicated. If it is too high, the risk of breakage will be greater, and the repair process will be more cumbersome.
Correct answer: The higher the level of the lock, the higher the anti-theft factor
Tips: The best anti-theft door lock on the market is a super B-level lock. Even a professional unlocker will take at least more than 4 hours to open such a lock without damaging the door lock and lock cylinder. This is the lowest level. A-level lock, it only takes a few minutes or even seconds to open.
Common misunderstanding 4: What is the authenticity of a security door?
In the anti-theft door market, under the banner of \”entry door\” and \”protective door\”, there is a lot of confusion and deception of consumers. Consumers who are not insiders are often confused in the selection process. They did not realize that security doors can be authentic or fake, and even only purchased them from unlicensed processing shops, which ultimately resulted in irreparable losses.
Correct answer: You can tell whether the door is good or bad by looking at the door corners
Tips: Each anti-theft door has a permanent steel seal with the four words A, B, C, and D. It consists of three parts: security code (FAM), anti-theft security level and enterprise-defined features. \”A\” type anti-theft door steel plate is relatively thickest, the thickness of the steel frame is more than 2.0mm, and there is an anti-theft steel mesh inside.
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