Choosing the entrance door, it is necessary to pay attention to all nuances. One of the important parameters is the door protection class. Therefore, it is worth understanding this issue in more detail, see photos of options to consciously make a choice in favor of this or that class.
After all, it is not necessary to forget that every additional possibility is a higher cost. Therefore, you need to select the optimal option.
Choose a metal door with protection
Product specifications
All metal doors are much stronger and safer wooden analogues, while different characteristics.
Therefore, we highlight the main characteristics of metal products:
- Comfort - reliable soundproofing, ease of use;
- Security - protection of entrance doors from fire, hacking, and so on;
- Aesthetics - the inlet metal door must also be also attractive.
All similar products are made from high strength materials. As a rule, alloyed cold coat steel is used.
The inside of products in each model is similar, but still there are certain differences. The door leaf has a metal frame created from profile pipes, a bent profile and metal corners.
The frames of steel are fixed on the frame, the laying materials are stacked between them. Full-metal design is created very rarely. This solution is used to protect special objects: banks, shops of jewels and others. These are armored products with different thickness of the metal used.
About classes
The input door protection class is the value that determine the different properties of the doors, for example, fire resistance or noise insulation. However, most often the consumer understands under such a term level of protection against hacking - in essence, strength.
It should be noted that the protection classes of metal doors are a separate value from class of locks, so these parameters should be considered separately.
The class is determined by the thickness of the metal, its quality, protection against external influences and other factors.
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According to GOST P 51072-97, they are currently distinguished by thirteen classes of hacking doors. Of these, only the first four classes are ordinary steel entrance doors.
The entrance doors of the 5th grade class and above are armored products used not for household purposes.
Under hacking is understood by intentional actions focused on penetration to abduct the property stored in it.
Determine the level of resistance impeding hacking EC:
Ec = k x T + B,
where b is the value that determines the difficulties in the transportation of the instrument, the need for electricity, the time required for preparation; t - the time used for hacking; k is the coefficient of the tool used, indicating the specifications of this tool, as well as the likelihood of detection.
Consider the data (minimum EC resistance) obtained by experts experimentally:
- I class: partial access is 30, full access - 50;
- Class II: partial - 50, full - 80;
- III class: partial - 80, full - 120;
- IV Class: Partial - 120, full - 180.
So, 1 class of burglar resistance is the use of a nail or a lomika, up to 75 cm long. Access to the room can be organized for up to ten minutes.
The front door of the protection can be hacked in thirty minutes. Therefore, getting access is only a matter of time.
Separately consider classes of burglar resistance of locks. In this case, GOST 7089-97 is used. The class is determined by the power loads caused by manual or electrical instruments. Used time on the use of these products for hacking the lock and points to the class.
For example, if there is less than three minutes, it is a castle of class 1. If there are some values in the room, you need to install the lock on the input door of 3 of the protection class. If even more valuable items are stored in the room, you should use locks and input doors of grade 4.
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In general, for the entrance doors it is recommended to use locks from 2 to 4 class of burglar resistance. This parameter can be found from the product passport.
By secrecy, the locks are divided into two classes: "A" and "B". They determine the number of key key combinations.
So, for 1 and 2 class doors, it is recommended to use one-class A class "A". Metal doors of the Protection Class 3 require the use of one lock of the protection level "B", 4 classes - two such devices.
Each locking device has a secret and executive part. The latter is the locking mechanism itself, which includes: shank, riglia, planks.
The secret area is the coded combinations of cylinders and Suwald to determine the "its" key.
It is also possible to identify three classes of entrance doors, not only in terms of burglary resistance, but also by the aesthetic parameters:
- Economy class - simple protection and low cost. The design is simplified here, low quality. Savings concerns primarily an external finish. As a rule, powder paint, cheap finishing materials applied. Such products may have good heat power and sound insulation. However, accessibility remains the most important characteristic.
- Premium class - good design, high quality materials used, considerable cost. The decoration is implemented at the expense of better materials: expensive laminate, good lining and others. Such products have higher safety, use comfort.
- Elite. For the manufacture, expensive materials, high-quality locks, fittings are involved. Such doors have an excellent design, which perfectly harmonizes with the surrounding environment. As a rule, only well-secured people can afford such doors.
Choosing the door, most often you have to pay attention not only to the level of security, but also on the appearance. As a rule, these indicators are near. That is, the higher the level of product protection, the better it looks like. Accordingly, you need to navigate when choosing both indicators. Then it can be guaranteed to select the optimal option, and at the price.
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Additional selection criteria
What else to pay attention to, choosing the entrance doors? Of course, it is also cost, ease of use.
Very often, the purchase budget becomes in the chapter angle when choosing. However, the quality of the product directly depends on this. So, the most expensive, though qualitative, are steel samples from well-known manufacturers. And the cheapest is the Chinese products of dubious quality. Look such products can be worthy, but their quality is questioned.
To properly protect the building, experts recommend not only to use the most reliable design, but also complement it by security alarm. Only an integrated approach to the organization of the security system can bring positive fruits in modern conditions.
It is also recommended to relate the appearance of the products with the facade of the building and the interior of the room. Then you can achieve the harmony of design.
You can still pay attention to the coating of the structure:
- Transfer. Attraction is guaranteed. The coating can mimic others. Suitable for use in darkened and dry spaces.
- Teflon. Color black, so a discreet appearance is obtained. The negative impact of ultraviolet radiation is leveled as the probability of scratching. Suitable for use on the street.
- Automal. Products can be used in private homes and apartments. Excellent combinations of quality and attractiveness.
- Molotovo-transfer coating. Inside the room uses a transfer coating, outside - hammer.
Suitable
Weigh all the recommendations, it remains to take into account your terms and requirements to choose a really optimal option.