The main function of the anti-theft door is anti-theft, followed by decoration and beautification. When purchasing, focus on checking the anti-theft performance and quality.
Appearance and composition of security door
1. The size of the door and the opening to the standard home door generally have four specifications, which are represented by the four-digit number composed of the width and height of the building opening. For example, when the width of the door opening is 1 meter and the height is 2.1 meters, its specification is called 1021, and the commonly used specifications are 0920, 0921, 1020, 1021 and so on. The opening direction of the door is divided into inner opening and outer opening, and inner opening and outer opening are further divided into left opening and right opening. Users can choose the opening direction of the door according to the direction that is convenient for opening the door.
2. The surface quality and safety of the door are qualified for the anti-theft security door. The materials used in the anti-theft security door meet the requirements of national standards. The thickness of the steel plate used for the door frame of the steel anti-theft door should not be less than 2 mm, and the thickness of the steel plate generally used for the front and rear panels of the door leaf is 0.8 Between -1 mm, the door leaf is provided with a skeleton and a reinforcing plate, which has a certain anti-damage performance and can reach the anti-theft level required by the national standard.
3. Safety of hardware ① Anti-theft lock Anti-theft lock is the most important part of the door. The performance of the anti-theft lock is directly related to the safety of the door. The anti-theft door generally uses mechanical locks and electronic locks. When choosing an anti-theft lock, it should be noted that the product must be certified by an authority designated by the state. The anti-theft lock should have the functions of anti-drilling, anti-saw, anti-prying, anti-pulling, anti-shock, and anti-technical opening. The locks used on anti-theft doors are divided into single-point locks and multi-point locks. The so-called single-point lock means that the lock locks the door through the lock point of the lock itself. Multi-point lock means that in addition to itself, the auxiliary lock is driven at the same time to form multiple lock points, which are distributed around the door frame to enhance the anti-pick performance. The protruding length of the anti-theft lock tongue (bolt) used in the anti-theft door: the protruding length of the class A anti-theft door should not be less than 14 mm, and the length of the class B should not be less than 20 mm. The shell of the anti-theft lock is generally made of a steel plate with a thickness of not less than 2 mm or a material with a certain strength. The folded edges and openings should be welded firmly or stamped as a whole. In the key parts corresponding to the main lock tongue (bolt) transmission device and the lock body, there should be protective measures such as anti-drilling steel plates or anti-drilling sleeves. ②Hinges Hinges are the parts that connect the door and the door frame to each other. They mainly play the role of supporting the door body, and at the same time, they should have a certain anti-theft function. At present, the hinges used in anti-theft doors generally use built-in and external hinges. The built-in hinge is suitable for the external door, and the external hinge is suitable for the internal door. For the internal door, the external hinge is used, and the diameter of the hinge shaft is generally greater than 12 mm. The closed edge of the steel plate must be welded.
Factors to consider when purchasing security doors
1. Choose the home furnishing market where consumers are satisfied or after-sales service is trustworthy.
2. It is necessary to shop around. For products of the same style and brand, comprehensive consideration must be given to quality, price, and service.
3. When customizing or purchasing anti-theft doors, you should purchase qualified products from manufacturers that have obtained the "Production License Registration Certificate" issued by the public security bureau.
4. Model selection Check whether the manufacturer or merchant has a qualified inspection report recently inspected by an authoritative inspection agency, and pay special attention to whether the production batch number and model specifications on the inspection report are the same as the actual ones.
5. The anti-theft door must have a product marking code, which includes ① anti-theft safety door logo: FAM ② security level: divided into three levels: A, B, and C, of which the anti-theft performance of grade C is the highest, grade B is the second, and grade A is the lowest, of which grade A is more suitable General household use.
6, to see if the material is thick. The thickness of the steel plate made of the steel door frame shall not be less than 2mm. The surface treatment of the steel plate has a high smoothness and no roughness and blistering. The thick steel plate has a dull sound when beaten. Weigh its weight and roughly determine whether the door leaf is solid.
7. The structure should be reasonable. At the same time, the pattern is fine, and the solder joints are uniform and dense.
8. When opening and locking the door, whether the lock is flexible to open. When opening or closing the door, whether the door leaf is easy, there should be no jamming or colliding with the door frame and making a sound.
9. Whether the gap between the door leaf and the door frame is too large or too small, the normal gap should be: the gap between the left, right and upper sides is not more than 3 mm, and the lower side is 5 mm.
10. The door leaf and door frame need to be equipped with anti-theft chain, whether the installation of the anti-theft chain is firm, and whether the handle rotates flexibly and firmly.
11. The name, specification, quantity, price and amount of the plastic-steel window must be indicated on the invoice and contract.
12. Know the name, address, contact person and telephone number of the organizer and manufacturer, so that the quality problem can be solved in time.
