An uncle who sells anti-theft doors revealed: When buying anti-theft doors, you can judge the safety by looking at the mark on the door.

To ensure the safety of our family and property, we must build anti-theft facilities at home. The most important anti-theft device is the anti-theft door. Dear friends, when you go to the store to buy security doors, there is a very simple trick, which is to choose and buy by looking at the marks on the security doors to directly judge the quality.

Nowadays, in order to ensure safety, anti-theft equipment needs to be installed during interior decoration. The most common anti-theft device is the anti-theft door. When choosing a security door, the first thing to consider is the anti-theft coefficient, so that we don’t buy it in vain. Anti-theft door merchants revealed that buying anti-theft doors is actually very simple, just look at the markings on the door to choose.

One: Buy security doors Method

1. Watch the mark on the door

In fact, many people only know that anti-theft doors are used to prevent theft, but in fact, if you want to judge the quality, you still need to look at the mark on the anti-theft door. Many anti-theft door locks will have a The sweat stains circled in circles, the Chinese characters are A, B, C and D, which actually represent the security level of the security door. The anti-theft performance of Class A security doors is definitely the last, followed by B, C and D.

Many people may think that there is not much difference in this security level, but this is not the case. For example, the filler used in Class A security doors is silicic acid. Aluminum rock wool and aluminum foil, this material can be very fireproof, and aluminum foil is relatively corrosion-resistant. Even if it encounters a fire, it will not absorb heat and expand, and its safety performance is relatively strong.

The filling of Class B anti-theft doors is mainly rock wool. Although it also has certain thermal insulation and flame retardancy, the quality is actually compared to Class A. Anti-theft doors are still much inferior, and the filling in Class C and D anti-theft doors is basically some honeycomb paper, which is not recommended.

2. Look at the thickness of the steel plate

Generally speaking, the thicker the steel plate, the better the quality of the anti-theft door. Simply \”push and knock\” \”Knock\” can determine the thickness of the steel plate. If it is a door with a thick steel plate, it will be more laborious to push; on the contrary, a thin door will be much lighter. In addition, you can also listen to the sound by knocking on the door. A dull sound is stronger; if the sound is crisp and hollow, it should be a fake.

3. Security door size

General security doors have four specifications, with heights of 2050mm and 1970mm and widths of 860mm and 960mm. After combination, they can be: 2050*860mm, 2050*960mm, 1970*860mm, 1970*950mm. 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, just purchase a height of 2050mm, because a margin of about 20mm needs to be left, making it easier to adjust during installation.

4. Anti-theft door logo

Anti-theft safety doors are produced according to national standards. Steel doors, metal doors, entrance Household doors are produced according to corporate standards. Therefore, seeing the standards clearly becomes the first step for consumers to identify security doors. Open the door and see if there is an anti-theft safety door sign on the inner corner of the door. Note that it is \”anti-theft safety door.\” If there is no such sign or the sign says metal door, steel door, or entrance door, it is not an anti-theft door.

5. Parts

When purchasing, you can also check the internal structure of a good anti-theft door such as the cat eye, doorbell box or lock handle. They all use honeycomb paper, rock wool and other materials with fireproof, thermal insulation and sound insulation functions as fillers.

Second: Security door installation method

First, after the anti-theft door is removed, We need to clean the cement bricks inside the security door. We mainly use an electric hammer to hit the cement bricks to make the cement fall off the door frame.

Second, after the cement is cleaned, we need to trim the door opening, measure the size of the door opening and the size of the door frame, and ensure that the anti-theft door can be put into the door opening. If there is no door opening, we need to Use bricks to build a doorway, and then install it after the wall of the doorway is dry.

Third, we put the anti-theft door into the door opening, adjust the door\’s level and verticality, use a battery to fix a screw on the upper side of the door, and try to see if the door switch opens normally? Let’s fix the other expansion screws.

Fourth, after the expansion screws are fixed, we test the switch and door lock again. The switch is normal. No problem, we will pour cement into the door frame.

Fifth, we usually use a special cement gun to pour cement from the screw hole or from the side of the door frame.

Sixth, inform the owner how to use the combination lock or door.

Dear friends who are doing interior decoration, go and choose When purchasing anti-theft doors, you can choose based on the markings on the door. When purchasing security doors, also choose regular brands to avoid buying inferior security doors.

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