Li Xian carefully inserted the iron piece into the keyhole, and gently swayed left and right. After a few seconds, the security door opened. In the author's surprised eyes, he walked to another security door and succeeded again.
This is the scene that the author witnessed in Jianyang on the 22nd. Why is it that the security door that seems to be secure and secure is easily broken through the line of defense? Insiders said that behind the game of anti-theft technology and unlocking technology is a chaotic door market, driven by the interests, the "heart" of the security door -- lock has become very fragile.
Most "AB" locks do not meet the standard
Li Xian, a brand security door dealer in Jianyang City, has a business qualification for more than ten years.
On the morning of the 22nd, in his own store, in just one minute, he opened three computer slot AB lock security doors in the store, and left no traces. The original key can also be used to open the door.
In order to verify his own statement, Li Xian took the author to a property company located in Tongyou Street and opened the door of the company's office with the consent of the person in charge of the company.
Why is the security door that protects life and property safe from being so vulnerable? Li Xian’s explanation is that “the sturdy security door is equipped with a fragile lock, which is a common phenomenon in the current door market.â€
Li Xian said the "fragile lock", also known as the computer slot AB lock, or a single row of marble locks. Usually there are two keys A and B. The A key is often used for the decoration of the house. After the decoration is finished, the owner will use the B key to open the door, and the A key will be scrapped.
The author learned from Jianyang Quality and Technical Supervision Bureau that according to the national "General Technical Standard for Anti-theft Security Doors", the security level of the security door is divided into four levels: A, B, C and D. The security level is successively decremented. Anti-theft lock level is class B, i.e., the High level of protection; and B, C, D grade security door, which lock the security level is level a, i.e. normal level of protection. The A-level lock "anti-technical start" time is 1 minute, and the "anti-destructive opening" is not less than 15 minutes.
Depending on the level of protection, the "AB" lock is a Class A lock of the general protection level. However, in fact, most of the "AB" locks often do not meet the national standard A-level locks, and their technology opening time is often less than one minute.
A-level anti-theft lock market share accounted for 80%
"At present, the security door equipped with 'AB' lock accounts for about 80% of Jianyang's entire door industry market share." Li Xian said that the security door equipped with A-class anti-theft lock is favored by consumers at its relatively low price. .
In the Jiayang Avenue, a children's playground in Jianyang City's security door store, the author visited a number of door stores. "The security door sold in the store is mostly equipped with anti-theft door with 'AB' lock", "Most customers buy this door"... The feedback from the shopkeepers proves Li Xian's statement to some extent.
During the visit, some shopkeepers admitted that the anti-theft level of such locks is low. Compared with other security doors equipped with B-class locks, the anti-theft effect is not satisfactory; there are also the anti-theft performance of the owner who calls the "AB" lock and the anti-theft performance of the B-class lock. Bo Zhong.
Jianyang City of Industry and Commerce instructor Zhang Jinlu said the market sales of ordinary metal door into the household doors and security doors. Some merchants claim that the "security door" for consumers is actually just an ordinary metal entry door. In the latter case, the state has mandatory regulations on the material, size and structural strength of the door; and the key locks on the door are also subject to strict requirements.
The author found that many of the security door materials, size, structural strength are in line with national standards, but the locks are single row of marble locks. "There are some manufacturers that evade national technical standards and produce security doors that do not meet the standards." Zhang Jinlu said.
In this regard, Li Xian agreed. "This is precisely the phenomenon of the current door market is extremely contradictory. The state has a famous regulation on the anti-technical opening and anti-destructive opening of anti-theft locks, but the locks on the market have reached this standard. Not much."
Lock upgrade does not require replacement of the security door
The reason is that insiders believe that the standard set by the state, the A-level lock "anti-technology open" time is not less than one minute, this low threshold has also caused confusion in the door industry market to a certain extent. Security door manufacturers pursue cost minimization and profit maximization. Many enterprises have not increased their capital investment to actively develop high-protection Class B locks and higher-level Super B-class locks from the perspective of economic interests.
In this regard, Li Xian told the author that the average price of the A-class lock market does not exceed 100 yuan, while the price of the B-class (or super-B-class) lock is higher. For example, the super-B lock only requires a hundred yuan. The security door produced according to the national standard has a higher production cost, and the consumer has limited ability to bear the price of the security door.
A matter of concern is that for those consumers who already have A-class anti-theft locks, what should be done to make this security door solid?
"Either change the door or upgrade the lock." Li Xian said. In fact, since the discovery of the computer slot AB lock security door in front of the "master key" this year, he has repeatedly reminded his new and old customers to replace the A-class lock with low protection level or purchase the security door with B-class lock. .
Li Xian believes that from an economic point of view, a door is a few hundred yuan, and a few thousand or even thousands of dollars. It is obviously too costly to replace a security door. It is a good choice for consumers to upgrade locks to meet national standards of Class B or Super Class B locks.
According to the national technical standards, the "anti-technical start" time of the B-class lock is 5 minutes, and the "anti-destructive opening" time is 30 minutes. "Super B-class lock with higher protection level, its 'anti-technology open' time is 4 hours. For example, Zhuang Zhe super B-class lock, consumers only need 180 yuan to replace the lock cylinder, no need to replace the security door." Li Xian said .
Source: Weibei Daily
Color: Kempas heartwood is very light in color, usually white to light yellow. Kempas sapwood is more orange to red or reddish brown. Over time and with exposure to UV light, the floor will darken to a more reddish color.
Grain: The grain is interlocked and/or spiraled, and is generally rough.
Variations within Species and Grades: There is little variation within the species and grades.
Hardness/Janka: Kempas has a Janka Scale rating of 1,710, making it harder than most species used for hardwood flooring.
Dimensional Stability: This particular species of wood is not considered dimensionally stable, and is less stable than the traditional Northern Red Oak.
Sawing/Machining: Sawing and machining kempas is somewhat difficult because of hard deposits. It can dull and damage tools so it is important to be careful when working with kempas.
Sanding: Kempas is known to sand well.
Nailing: It may be difficult to nail because of how easily the wood may split.
Finishing: The coarse texture and acidic nature of the wood make finishing more difficult than some other species. It will need good filling to finish and polish well.
Availability: Limited availability.
KelaiWood , https://www.kelaiwooden.com