Mr. Zhang, the owner, told the editorial office that he had lived in an old residential area. The security conditions were not good. He wanted to change a good quality security door. However, there were many brands on the market and the price difference was so great that it made him have no choice. . He also reflected that he saw that some netizens broke the news that they had a good security door with a good appearance. They were filled with corrugated cardboard. This made him even more difficult. What kind of security door should he choose?
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Signing a contract is also necessary
“If only on the surface, it is really impossible to tell whether the quality of the security door is good or bad.†Shen Wuyong, director of security door technology on the introduction, only the "GB17565-2007 anti-theft security door general technical conditions" and "GB12955-2008 Fire doors, two national standards. There are also more than 30 recommended industry standards, and the standards enforced by companies are also confusing. Some small businesses blindly seize the market at low prices. For profit, it is also possible to cut corners. The lack of professional knowledge of consumers really does not seem to see the quality of the security door, he suggested that the best way to protect their rights is to sign a detailed and contractual agreement with the business as a proof of future rights protection.
Shen Wuyong introduced that on the contract, the first thing to mark out is the “anti-theft security door,†which is the state’s recognition of regular security doors. Many small manufacturers often use their name to do tricks. For example, they sell anti-smashing doors and steel security doors to confuse and let consumers think that they are buying security doors. Once problems arise, they will shirk their responsibilities. . In addition, "GB17565-2007 anti-theft security doors general technical conditions," the security door according to the level of anti-theft performance is divided into A, B, C, D four, the higher the level that the stronger the anti-theft performance, material and quality are better. The anti-theft security level mark will be permanently fixed at the upper corner of the inner hinge, and the height from the ground is 1600mm. Without this mark, it is difficult to call it a security door. In addition to checking the mark when the door is installed, the owner must clearly indicate the level of the purchased door in the contract, because once a problem occurs, the relevant department will conduct inspections and assessments based on the level of the door.
Inspection quality to see four elements
In response to Mr. Zhang’s claim that the filler is a corrugated paper, the reporter also saw some coups on the Internet to check the quality of the security door. For example, looking at the filling inside the security door from the cat's eye hole, it should be rock wool rather than corrugated paper; Tap the door and give a "bang" sound better. It was also claimed that anti-theft doors must have fire-resistance and must have sealing strips. Some other people reminded that when buying a door, don't forget to ask the merchant for an insurance policy. Are these folk sayings really reliable?
Shen Wuyong introduced that southern companies are accustomed to filling corrugated paper, and northern companies consider that the door insulation and sound insulation problems are generally filled with rock wool, polyurethane, etc., but because the filling does not affect the anti-theft performance of the security door, and the state of the security door There is no relevant regulation for the filler, so it cannot be judged by the filler to judge the quality of the security door.
The method of hitting the door is not reliable. “This is for the consumer to use as a professional.†Shen Wuyong pointed out that tapping the door makes a more “real†sound and can only be used to judge the filling of the door. And this requires a lot of experience to judge, so this judgment method has no practical significance for ordinary consumers.
As to whether the security door must have fireproof performance, he said that the country has no provisions on the fire performance of security doors used as door-to-doors. In addition to some of the new high-level homes, such as the 14-storey house, the security door must reach a certain degree of fire protection. However, Shen Wuyong introduced that if the owners have special requirements for fire protection doors, the manufacturers can also modify the security doors according to their requirements, increase fire performance, and meet relevant requirements.
"As for the anti-theft door has no sealing strip, this depends on the specific product." According to reports, the country has no relevant requirements for airtight security doors, but there are seals can indeed increase the door's noise, wind, cold performance. Whether or not the anti-theft door is accompanied by an insurance policy is not certain. Only a few brands operate this way. However, this insurance is a guarantee for the owner’s property loss after the manufacturer’s door is removed. If the insurance is attached, it is undoubtedly a good thing for the owner.
Shen Wuyong pointed out that the quality of the inspection security door can be seen only by the four elements that constitute the door body: door frames, door leaves, support structures, hinges, and door locks. First of all, the thickness of the steel plate of the door frame and the door leaf must meet the requirements of the country. The first and second class door frames should be 2.0mm and the door leaf should be 1.0mm; the Class C door frame should be 1.8mm and the door leaf should be 0.8mm; the D-class door frame should be 1.5mm and the door leaf should be 0.6-0.8mm. Secondly, the steel structure that supports the door leaf must be strong. This is the key to preventing the deformation of the door leaf, ensuring strength and preventing flooding. Again, the material thickness of the door hinge must be more than 3mm, in addition to ensuring the normal opening and closing of the door, but also play a role in the prevention of flooding. The door lock is the soul of the security door, and the qualified door lock has a corresponding test report. The owner can view it when purchasing.
Anti-theft features also rely on conservation
What kind of security door should you choose? According to experts, when selecting an anti-theft door, the owner must first select the model in the store. The manufacturer conducts on-site measurement and design according to the size of the homeowner's door hole and living conditions, and then gives the owner the opening and closing direction, style, and security door level according to the actual situation. make a suggestion. For the door-level selection, Shen Wuyong suggested that it can be purchased according to its own economic conditions. General B and C levels are more suitable for ordinary owners.
Experts reminded that even if you choose a qualified security door, you must pay attention to the use of habits and daily maintenance, so as to better play the anti-theft feature of the security door. When the owner goes out for a long time, he must remember to lock the door. Do not think that the door has been closed and everything will be fine. In fact, the latching performance of the separate latch tongue is not enough. The door must be locked and all the latches work together to prevent theft. . At night, the door is locked from the inside.
In addition, daily maintenance is also important. Shen Wuyong pointed out that the screws on the door hinge must be reinforced once every three months to prevent the door from sagging after the screws loosen, making it difficult to open the door with the door frame. The screws on the lock plate and the handle should also be regularly reinforced. These are very simple and the owner can operate it himself, but do not remove the lock privately. In addition, the pencil core must be regularly lubricated in the lock cylinder so that the key can be inserted and removed more smoothly, but grease lubrication is not allowed. Shen Wuyong pointed out that if oil is instilled in the lock hole, it will mix with the iron scraps generated by the key in the lock cylinder, and the entire lock cylinder will be blocked within one month.
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